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  • 09/16/15--14:40: T.38
  • T.38 is an ITU standard for sending FAX across IP networks in a real-time mode.
    FAX messages are sent as UDP or TCP/IP packets.

    • The IETFRFCRFC 3362 implements a media type called image/t38 for T.38 faxes.

    From RFC 3362:

    ITU-T Recommendation T.38 T.38 describes the technical features necessary to transfer facsimile documents in real-time between two standard Group 3 facsimile terminals over the Internet or other networks using IP protocols. The Recommendation allows the use of either TCP or UDP depending on the service environment.

    ITU-T Recommendation T.38 T.38 Annex D describes system level requirements and procedures for internet aware facsimile implementations and internet aware facsimile gateways conforming to ITU-T T.38 to establish calls with other ITU-T T.38 implementations using the procedures defined in IETF RFC 2543 SIP-99 and IETF RFC 2327 SDP.

    Note that ITU-T T.38 Recommendation T.38 (04/02) T.38 is an aggregation of the original ITU-T Recommendation T.38 (06/98)T.38-98 and all of the subsequent Amendments and Corrigendum including T.38D-00. While T.38 and T.38D-00 describe SIP procedures per SIP-99, the procedures can also be applied to the revised Session Initiation Protocol specification SIP.



    The Importance of T.30 ECM Error Correction Mode (ECM) in T.38 Deployments

    One of the most important features of the traditional facsimile standard (T.30) is ECM error correction. The inventors of fax recognized that the audio quality of PSTN phone lines could not be trusted to be 100% error free - it was not uncommon to hear static, or the occasional pop or crackle on some fax calls. ECM error correction allows the sending and receiving terminals to compare notes at the end of each page, and selectively retransmit any data that was not received the first time around. This retransmission process is continued until the received page is certified error free, and the transmission of the next page begins.

    Remarkably, many T.38 implementations, including those of top tier carriers such as Level3, XO, Verizon etc have explicitly disabled ECM error correction. This problem is discussed in detail here. Don't make this mistake! Be sure to enable ECM and insist your provider or PBX vendor do the same!

    Want to check to make sure you have ECM enabled? This handy ECM self-test tool can tell you in minutes.


    T.38 with Fax Voip T38 Fax & Voice

    FaxVoip Software develops solutions for the transmission of a fax via the Internet Telephony (FOIP). The main emphasis has been placed on the transfer T.38 and audio via SIP, H.323 and ISDN CAPI 2.0.
    Fax Voip application operates with T.38 faxes via standart COM port interface.
    What is Voip? For your fax or voice application, it's a Voice Fax Modem. ...

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    This is a list of VOIP Service Providers who offer full service products primarily aimed at the small to medium sized business telephone market. Such companies typically support multi-line telephone systems, small PBX gateways and hosted VoIP (as an alternative to Centrex service). See also:


    Service providers operating in more then one country are listed under each country. "Operating in a country" means a provider that has billing and support staff located in the country, and offers service subject to the regulations and consumer protection laws of that country.

    Marketing is NOT ALLOWED on this page. Please describe services in neutral language and normal fonts. Don't bother listing prices--unless you really plan to return and edit them as things change. If you want to add your company, please read the Posting Guidelines for Promoting Products and Services. When you add your entry to this page, please make sure your entry is in alphabetical order in relationship to other vendors listed in the same section. Failure to follow these guidelines will result in deletion!


    Please include relevant information like SIP or IAX handoff, how outgoing CLID is set, whether a given account may originate multiple calls at once, etc.

    If you like this page, please link to it, so Google and other search engines will consider it more important.

    Users: Please feel free to REMOVE any listing that does not meet the stated goals of this page.

    Providers in other countries/continents can be found here:

    Australia


    • 1300 Numbers Australia - We are specialist carriers of 1300 phone numbers and smartnumbers with a strong focus on providing excellent customer service. Our services include live answering service which is the perfect solution to compliment your 1300 number, full service telecommunications including fixed landlines, business-grade VOIP and hosted PBX, business broadband internet solutions, virtual office services, Fax2Email and Voice2Email. ...

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    This is a list of VOIP Service Providers who offer full service products primarily aimed at the small to medium sized business telephone market. Such companies typically support multi-line telephone systems, small PBX gateways and hosted VoIP (as an alternative to Centrex service). See also:


    Service providers operating in more then one country are listed under each country. "Operating in a country" means a provider that has billing and support staff located in the country, and offers service subject to the regulations and consumer protection laws of that country.

    Please describe services in neutral language and normal fonts. Don't bother listing prices--unless you really plan to return and edit them as things change. If you want to add your company, please read the Posting Guidelines for Promoting Products and Services. When you add your entry to this page, please make sure your entry is in alphabetical order in relationship to other vendors listed in the same section. Failure to follow these guidelines will result in deletion!


    Please include relevant information like SIP or IAX handoff, how outgoing CLID is set, whether a given account may originate multiple calls at once, etc.

    Users: Please feel free to REMOVE any listing that does not meet the stated goals of this page. ...

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  • 09/16/15--15:21: VoIP Providers Canada
  • This is a list of VoIP providers in Canada. These companies typically support multi-line telephone systems, small PBX gateways and hosted VoIP. Please add VoIP Providers Canada to the list below.



    Business VoIP Providers in Canada

    • CHECKBOX, VoIP Carrier, Wholesale A-Z, CALL CENTER CARRIER - We provide VoIP connection specially for call centers / marketing companies who needs High stress / CPS routes, We have USA CC, Canada CC, Australia CC, China CC, UK CC and others Direct Routes to many countries.
    • VoIPInvite: VoIPInvite is FCC licensed Wholesale VoIP/SIP termination service provider in Canada at very low rates and best quality.
    • RingOffice: Specializes in Cloud Hosted Business Phone Systems, Business VoIP Lines, SIP Trunks, and On-Premise Phone Systems using only premium business grade service. Coverage extends throughout Canada and USA. Offers a comprehensive customer portal with 24/7/365 support.
    • AstraQom AstraQom Business Solutions include Hosted PBX, Live Answering, Computer Telephony Integrations and Business Internet. The AstraQom enterprise-grade VoIP solutions included: SIP Trunking, DID Numbers, A-Z Termination & VoIP Colocation.
    • AVOXI AVOXI Virtual Call Center Solutions - VoIP Service Provider, provide virtual call center products like SIP trunking and VoIP gateway solutions, with international toll-free numbers. Contact Number 1-800-462-8694.
    • CallForwarding - Be present anywhere in the world with toll free forwarding services from CallForwarding.com. Contact Number: 800-231-9802
    • Telzio - Small business phone systems with full features for over 50 countries including Canada
    • Magictel Inc Cheap International Phone calls, Magictel offers great low call rates to world, call using your mobile, landline phone or pc, save up to 60% on phone bills, Call using our Mobile App for iPhone and AndroidReceive faxes in your email with our fax enabled DIDs, no extra charge or page limit for receiving faxes.

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  • 09/16/15--15:23: VoIP Providers USA
  • This is a list of VoIP providers in the USA. These companies typically support multi-line telephone systems, small PBX gateways and hosted VoIP. Please add VoIP Providers USA to the list below.

    VoIP Providers in the USA

    • CHECKBOX, VoIP Carrier, Wholesale A-Z, CALL CENTER CARRIER - We provide VoIP connection specially for CALL CENTERS / MARKETING COMPANIES who needs High Stress / CPS routes, We have USA CC, Canada CC, Australia CC, China CC, UK CC and others, Direct Routes to many countries.
    • Vox Connect - Cloud based phone systems, cloud hosted PBX, SIP trunks Vox Connect is a cloud-based phone systems provider serving Chicago’s home, small and medium-sized businesses. We provide cloud hosted phone systems, hosted PBX ( also known as cloud based PBX ), domestic and international calling services, local/toll free numbers for USA and Canada.Our high-quality cost-effective telecom services are custom-designed to fit your business – and your budget.

    • http://www.cryptovoip.in/ - We provide Software development and customization services in VoIP Domain. Our Product suite consists of WebRTC based Web Dialer, Web Click-to-Call, VoIP Mobile Dialers for Android, iPhone and Windows 8. PC VoIP Dialers for Windows and Mac. Tunneling Solution to make all VoIP Dialers work in VoIP and SIP Blocked areas like Dubai, Oman, France, etc. We customize our products and solution with your images and Brand. We also provide services like Custom Software Development and Maintenance and Offshore Development and OutSourcing. Please visit www.cryptovoip.in or skype: cryptovoip or mail us: sales@cryptovoip.in.
    • 011now.com Cheap International long distance phone to phone calling by 011Now offers you great rates from any phone in US and Canada. Save 90% on international long distance calls. voip-info Page for more information. ...

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  • 09/17/15--09:50: Call Center Software
  • Call center software is the software system that allows a company or organization to run a call center. This page lets you compare call center software providers.

    There are hundreds of different providers of call center software across the globe, and every call center software system has its pros and cons. When selecting the right call center software for your business, contact center, or call center, it's important to decide which features you want your phone system to have.

    Types of Call Center Software


    ACD helps productivity by assigning inbound agents to incoming calls. The automatic call distributor uses a set of instructions to determine who gets the call in the system. The algorithm can route calls based on agent skill or whoever has an idle phone. ACD can use caller ID or automatic number identification, but usually interactive voice response is enough to help the system determine the reason for the call.

    An automatic call distributor can also take advantage of computer telephony integration. Agents can receive relevant data on their computers along with the incoming call.

    Computer telephony integration is a broad category of software that connects telephone and computer systems. Computer telephony integration software can have both desktop and server functions. Various applications make up a system that can control phones, display call information, and route and report calls.

    Interactive voice response allows callers to route themselves to the appropriate department or use the company’s database for assistance. More sophisticated interactive voice response systems can access accounts and perform certain tasks, such as activating a credit card through a bank’s phone system. IVR involves using dial tone multi-frequency or voice commands. In the VoIP industry, a PBXauto attendant is near interchangeable with IVR. However, auto attendants are not capable of speech recognition.

    A predictive dialer calls a list of phone numbers at once. Outbound agents are then connected to the numbers that answer. A predictive dialer uses calculations to minimize the idle time of agents and the potential of losing answered calls when no agents are available.

    Contact Center Software

    For contact centers, software includes applications for chat, email, and web interaction in addition to telephony functions.

    Call Center Software Providers

    This is a list of call center software providers and developers. Please keep this list in alphabetical order.

    • Ameyo Contact Center Software is an all-in-one software based communication solution that manages end-to-end customer journeys and consistently delivers exceptional customer experiences. It is a powerful and highly flexible IP-based Call Center Software platform that lets you have a personalized interaction with every customer across multiple channels, thereby driving customer engagement to a level par excellence. ...

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    OpenCDRRate:



    OpenCDRRate is a scalable, Linux/Windows-compatible system to rate, tax and invoice your telecom/VoIP CDR. It runs on Postgres, Apache and PHP. This system allows you to import your CDR into the rating queue. The calls will be rated based on a predefined schedule. Un-ratable calls will go into a HELD queue to be re-rated at a later date.

    It is currently built to provide the following features:

    • Interstate - Bill for minutes, CNAM dips, LRN dips.
    • Intrastate - Bill for minutes, CNAM dips, LRN dips.
    • Termination of Indeterminate Jurisdiction - Automatic categorization of indeterminate calls.
    • Simple Termination - Bill for minutes even if you don't jurisdictionalize calls.
    • International - Bill for minutes to international destinations.
    • Toll-free Origination - Bill for incoming calls to toll-free numbers. Rates based on origin of call.
    • Tiered Origination - Bill incoming calls based on rate center tiers.
    • Billing - Generate invoices with all fees and taxes.
    • CDR Taxation
    • Payment Processing
    • Usage Reporting
    • Admin Portal
    • Accounting Integrations


    Support - email support(at)opencdrrate.org

    Follow us on Twitter to receive new feature notifications.



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  • 09/18/15--04:56: VOIP Event Calendar
  • 2015 VOIP Related Event:

    September 2015

    • 28 – 29 INDO AFRICA ICT EXPO 2015 - At Indo - Africa ICT Expo 2015, the latest innovative ICT technologies covering wide range of products, services, and software applications will be on display and open for technology transfer. ICT Expo scheduled at Nairobi, Kenya.
    • 16 – 18 Cloud Partners Conference - Cloud Partners Conference is a good platform to discover the cloud based solutions that can scale with your business needs. Cloud Partners Conference scheduled at Hynes Convention Center, Boston.
    • 01 – 04 Asian Carriers Conference 2015 (ACC) - The best and the biggest information technology and telecommunications companies from Asia and the rest of the world. The ACC 2015 is scheduled from 01 – 04 September at Shangri-La’s Mactan Resort and Spa in Cebu, Philippines.
    • 16 - 17 Wholesale World Congress - Large event for VoIP providers, ISPs, wireless and mobile operators, as well as other companies from the voice, data and SMS industries.

    August 2015

    • 11 - 13 The Prepaid Press Expo 2015 - The ttp EXPO'15 is a very popular event that focuses on prepaid products and services. All prepaid service providers around the world are expected to attend this event which offers business networking sessions for striking new business opportunities. The tpp EXPO'15 is scheduled from August 11 – 13, 2015 at Planet Hollywood, Las Vegas.

    June 2015


    May 2015


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  • 09/18/15--10:08: voip-info.org
  • Welcome to the VOIP Wiki - a reference guide to all things VOIP.


    This Wiki covers everything related to VOIP, software, hardware, VoIP service providers, reviews, configurations, standards, tips and tricks and everything else related to voice over IP networks, IP telephony and Internet Telephony.

    Your contributions are welcome, please read the How to add information to this wiki page and the Posting Guidelinesbefore you post.


    NEWS


    News Resources


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  • 09/18/15--12:02: Cloud PBX
  • A cloud PBX system is a based on cloud computing technology, where data is stored and transferred over the Internet, rather than on a computer or piece of hardware that an end-user owns.

    Cloud technology that has been around for many years, but has only more recently become popular for consumer use with the introduction of programs like MobileMe and the iCloud, both consumer-based cloud computing technologies.

    History of the Cloud

    Cloud technology has many applications for businesses and consumers. In the mid-1990’s, companies that had previously used “point-to-point” data circuits to move and store data began to use a cloud technology instead as they found that this was a cheaper way to do the same tasks, and made more efficient use of bandwidth.

    The term “cloud” likely refers to the drawings of clouds used by its program developers to represent the abstraction of the Internet. The symbol was used to mark the division between responsibilities of the service provider company and the responsibilities of the customer.

    Cloud technology means that you can access the data and services of your cloud from any device connected to the Internet. So, with a cloud PBX provider, you can use all of the standard PBX features without the need of an actual PBX in your home or office.

    What is PBX? What is Cloud PBX?

    PBX, or public branch exchange, is the name used to refer to the technology that any given telephone provider uses to route calls. Originally, a PBX was a large unit of hardware that had to be stored on site and operated by hand. These machines could be very costly for a company, as they were large, needed special storage facilities, needed regular repairs, and had to be operated manually.

    Companies with multiple phones and many employees can’t function properly without some kind of PBX technology in the office. In more recent years, a PBX could be made to operate automatically, without an operator, but even these devices were expensive and complicated (the cheapest are around $400). And if a business needed to move to a new location, or add or remove a phone line, the process could be very costly and time consuming.

    Initial cost and upkeep of traditional PBX vs cloud PBX

    • Traditional PBX: About $5,000 including cost of installation and new equipment fees. $10.00/hour for an operator. If managed without an operator, can still run to around $300 or $400 for upkeep and Internet connection.
    • RingCentral Virtual PBX: $19.99/month plus $0.049/additional minute
    • Cebod Telecom: $19.99/month All Inclusive and Unlimited Call
    • Vocalocity Virtual Extension:$14.99/month plus $0.03/additional minute
    • RingOffice Cloud Phone System: Plans from $10/month
    • Switchvox Cloud by Digium: $29/month, unlimited minutes and all UC features included
    • MultiTEL Cloud Hosted PBX— free for up to 5 users, $0.0095 for calls to US/Canada
    • VoIPstudio : A Simple and Powerful Cloud Based Business PBX System. Plans start from $ 4.99/Month

    Cloud PBX gives you access to PBX capabilities without the need for complicated and expensive equipment. Cloud PBX is a kind of hosted PBX or virtual PBX, meaning that all of the routing services are performed by your VoIP provider, rather than by an employee managing a PBX system in your office.

    How does it work?

    All cloud technologies are dependent on the Internet. A cloud PBX works by connecting to your IP, or Internet phone, for its internet connection. So, you must have a VoIP or other IP system in place in your office in order to use a cloud PBX. ...

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    Toll-free termination are calls destined to 8YY destinations. These providers allow you to terminate toll-free calls from the US and Canada for free in some cases. If you have a large volume of calls to toll-free numbers, some providers may pay you for your calls. Carriers who have direct agreements have a higher success in collections. Calls must originate from your network to the Carrier bound to a Toll Free Number.

    There are several elements to a Toll Free Call.
    1) End User dials a Toll Free Number. (Voip or TDM)
    2) End User Provider Network must route this call. (End office elements)
    3) Resellers of this traffic must hand this call off to a TANDEM provider.
    4) Tandem Provider will DIP SMS800 for CIC instructions on every TFN. (see HyperCube)
    5) CIC (IXC) will receive traffic and route to RespOrg
    6) RespOrgs are the Responsible Organizations of Every Toll Free Number.
    7) End User / Owner of the Toll Free Number. (Final destination)

    Without registration required


    Toll Free Dollars
    http://www.tollfreedollars.com
    Terminate your toll free traffic for free. We will also pay you for your traffic if you qualify up to $.001 per min. We have low min to be able to be paid for traffic. We only use the best providers and our quality is always great. www.tollfreedollars.com


    Alcazar Networks Inc - Free toll-free termination
    Alcazar Networks - VoIP Services
    • Providing FREE toll-free termination to the US48 800 - 855 - 866 - 877 - 888
    • Full accurate Caller-ID number (ANI) delivered
    • Codecs supported: G711 and G729
    • NO SIP REGISTRATION REQUIRED
    • If you require registration we accept ANY credentials so you can start passing calls immediately.

    ArcTele Communications, Inc - Toll Free Termination
    http://www.arctele.com
    ArcTele Communications, Inc offers a Toll Free termaintion gateway service free of charge.
    - We send your callerID
    - ULAW and G729
    - Send calls in the format of 18XXXXXXXXX
    - Unauthenticated to TOLL FREE NUMBER@tf.arctele.com port 5060

    Broadvox is a leading wholesale VoIP service provider that delivers reliable VoIP solutions for domestic and international businesses.

    Broadvox has 8YY number toll-free termination services that provide switching for 8YY calls originated by customers worldwide; conduct the database lookup and determine to which Interexchange carrier (IXC) the toll free number belongs; then route the call appropriately for call completion.

    For more information, to get a FREE quote on our rates or call us at 216.373. ...

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  • 09/19/15--10:39: IVR
  • What Is IVR?


    IVR, or interactive voice response, is a what allows phone systems to process touch tones or voice waves during a telephone call. IVR technology is responsible for the menus people hear and respond to when they call up a company or business and hear the words: "press 1 for sales, press 2 for marketing, press 0 to speak to the operator," for example. IVR systems can be fully customized to play back dynamic audio, or pre-recorded menu options.

    IVR is not necessarily related to VOIP, however, a VOIP IVR is. Most VOIP IVR systems or software support SIP based VOIP, but Skype IVR also support non-standard based Skype service.

    Computer Telephony Component

    IVR is an automated computer telephony integration CTI system which allows providers to create complex menus which the caller can navigate by using touch-tone key-presses or via spoken commands. IVR systems can be used as a Voice portal to access remote information such as bus scheduling where the caller can select the route for which they require information, or for billing or customer service systems which allow the caller to enter information such as their account number or credit card details without the need for operator assistance.

    IVR and ACD Integration

    IVR solutions are often integrated with an ACD, which routes incoming phone calls to agent work groups. This integration can be both a front end and back operation.

    • Most typically, an ACD system can route callers to an IVR program based upon DNIS or other parameters such as time of day or day of the week.
    • A smart IVR can transfer callers back to an ACD system to route the call to the next available agent within an agent hunt group.

    One important task of an integrated IVR and ACD is to display Screen Pop information from the caller on the agent's workstation so that the agent has caller information readily available without the need to prompt the caller again.

    IVR and Voice Broadcasting

    IVR applications are typically associated with inbound calling programs. However, IVR technology can be applied to outbound calling campaigns and are most commonly used with Voice Broadcasting and touchtone responses. Examples of the application of this technology include the option to speak with an operator, opt out of a calling campaign, or taking an outbound survey.

    Here is an example of IVR implementation in Voice broadcasting

    Graphical Design Tool for IVR Applications

    Recent IVR systems usually use high level scripting languages such as VoiceXML, an open standard for interactive voice response systems. For most users who lack technical training, developing an IVR system using scripting language, even high level language, are not feasible. The good news is there are design tools that are based on graphical user interface for the techies and none-techies alike. By using a GUI tool, a user can simply drag-and-drop components and create and deploy an IVR system in minutes. The whole design is a call flow diagram, much like a voicemail system user manual.

    See Also (Vendor Information)

    IVR Information


    • CCXML standard markup language for IVR / call control applications
    • IVR System Simulation Model - estimates resources required for an inbound calling campaign.
    • IVRS World - Blog about IVR

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  • 09/19/15--21:39: SBO
  • What is SBO?

    Synchronous Bandwidth Optimizer is generally known as http://www.getsbo.com/|SBO]. It is a bandwidth optimization solution for VoIP call termination developed by Synchronous ICT, a world famous VoIP software provider. It is a pioneer Bandwidth Optimization Technology fully loaded with amazing features.

    Why Bandwidth Saver is so important for VoIP?

    In VoIP termination, main expenditure is Bandwidth cost. Minimizing Bandwidth consumption is the main purpose of SBO Solution, at the same time it helps to reduce business operation cost. As a perfect bandwidth saver SBO reduces more than 80% internet cost directly. However, the quality of service is never compromised. To run a quality VoIP business congestion free, telco grade bandwidth connection is required . Such type of bandwidth connection is very costly as well as extremely rare. So, it was almost impossible to run quality VoIP business basically for small and medium entrepreneurs. But, now things are different, SBO Multipath make its possible to run IP telephony business with low cost share internet connection by maintaining supreme service quality. It can combine multiple internet connections together and use all the available bandwidth creating a single connection.

    How does SBO work?

    Well, there are mainly two parts in SIP communication, one is payload and another is RTP header. For a SIP call with G.729 it consumes almost 31.5 kbps bandwidth. But, noticeable matter is that the payload size is only 8 kbps. Rest of the bandwidth is consumed by RTP and other headers. SBO works here. It has own proprietary VoIP protocol which can replace the RTP and only transmit payload size thus reducing bandwidth consumption.

    Key Features of SBO:

    • The most important feature of SBO is, it can reduce bandwidth cost directly by 80% without degrading service quality.
    • SBO works behind any type of firewall and NAT. That means, it has anti-block feature.
    • Works with all commonly used codecs such as G.729, G.723 etc.
    • Multipath: SBO Multipath allows you to use multiple number of internet connections same time. These connections can be used simultaneously for your VoIP termination establishment which can balance load among available networks and it develop service quality expectedly.
    • Works with any type of internet connection i.e. GPRS, EDGE, 3G, 4G, Wi-Fi, Wi-Max, so it is possible to setup anywhere where mobile internet is available.
    • Highly secure and linux based software.
    • Full featured billing platform SyncSwitch is integrated with SBO. It help you to check CDR, ACD, add or remove clients.
    • Increase Average Call Duration (ACD) by 2-3 minutes;
    • Works with both real IP and local IP.
    • Technical support is available 24/7. Our support team is highly experienced and skilled at dealing with your VoIP problems.

    Contact Details

    Office 305, Building 12, Dubai Internet City
    500846, Dubai, UAE
    Skype: sync. ...

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  • 09/19/15--23:03: VOIP and VPN
  • Surprisingly, using VOIP across an SSL-based VPN can actually improve the call quality (as measured by MOS scores). The improvement seems to be due to encapsulating the UDP VOIP packets ( SIP and RTP ) in TCP/IP. NB Datagram-based VPNs, such as IPSec's ESP are still bad.

    According to a study by Sirrix VPN has no negative influence on latency, jitter and packet loss; in the case of the g7.11 codec and compressed VPN it is even possible to gain 10% bandwidth compared to non-VPN traffic. Apart from that, different common VPN solutions have big difference on the available throughput, which is due to the rather small packet sizes and greatly increased overhead:

    With enabling authentication, encryption, HMAC, anti-replay attack, and initialization vector, and use small RTP size for Codec, the vpn overhead is high:
    g723 with 30ms RTP size and using VPN tunneling: approx. 80% overhead;
    g729a with 20ms RTP size and using VPN tunneling: approx. 80% overhead;

    But when making some adjustments on the encryption/authentication settings and double the RTP size, the overhead can go down to about 20%-30%, which is affordable for most of cases.

    In addition, SBO VPN works to lessen the uses of bandwidth consumption for SIP communication directly by bypassing internet firewall. To make a SIP call with Codec G.729 or G. 723, it consumed about 31.5 kbps bandwidth. But, noticeable matter is that the payload size is only 8 kbps. Rest of the bandwidth is consumed by RTP and other headers. SBO VPN system works here to reduce 80% internet consumption by replaceing the RTP and only transmit payload size.

    Comparing to SRTP as encryption method for VoIP: approx. 5% additional overhead.

    There is an OpenVPN-based service available on the net which resolves the excessive traffic consumption issue. Several voice packets are placed in the buffer before encapsulation. This minimizes VPN impact and traffic usage doesn't grow with VPN service. This can also help to prevent VoIP traffic detection by packet size, since the size of a single packet is comparable with MTU size (usually 1500 or less).

    VoIP and VPN Forums:


    VoIP Tunneling methods


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  • 09/20/15--07:48: Asterisk Traning
  • Companies that provide Asterisk training:

    • TeleSpeak - Digium Authorised Asterisk TrainingWe are the Authorised Training Partner for the UK, Ireland, Belgium and the Netherlands. Our Amsterdam Asterisk Advanced class is scheduled for 7-11 September at the ImpactHub. Book Now. Classes available in the UK too...


    • Learn to Write Your Own Asterisk DialplansLimited Time Discount - Step by step video training showing you how to write dialplans for auto attendants, call center queues, advanced time of day routing and even how to setup night mode for your clients. Learn at your own pace by watching videos and following along with the labs. This video training series is provided by jonathanmanning.com Asterisk Training








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    Here is a list of producers of ready made, black box PBXs that are based on Asterisk (in no particular order):

    astTECS - The True IP PBX



    astTECS is a leading provider of IP PBX systems and aims at providing great quality along with customer satisfaction.
    Features are listed below:
    • IVR
    • Audio and Video Conference
    • Voice Mail to Email
    • Built in Call recording
    • Centralized Admin
    • GSM Integration
    • Call Detail Report
    • FOP- Web based Receptionist Console
    • Fax Support and Parallel Ringing

    Type of services :
    • IP/PBX
    • Call Center Dialer
    • IVR solution
    • Voice Logger
    • Video Conferencing

    Ecosmob Technology - Custom PBX Software Development Service Provider

    Ecosmob Technologies is a VoIP solutions provider company which provides custom PBX software development, configuration and remote support services based on client requirements.

    EBSolution - Custom IT Solutions

    • Web Site: http://www.ebsolution.ca
    • Email: mailto:info@ebsolution.ca
    • Location: Toronto, Canada
    • Phone Number: +1.905.695.5485
    • Type of Support: Telecommunications, VoIP, Cisco Networking, Asterisk, Asterisk@Home / Trixbox, Elastix and more
    • Hourly and Contract Support, Consulting, Hosting, Office PBX, etc.
    • Residential and commercial phone and internet services.

    Wayatone Media Inc. - Communication

    • Web Site: http://www.wayatone.com
    • Email: mailto:info@wayatone.com
    • Location: Toronto, Canada
    • Phone Number: +1-647-247-8004
    • Type of Support: Telecommunications, VoIP, Networking, Asterisk, Asterisk@Home / Trixbox, Elastix and more
    • Hourly and Contract Support, Consulting, Hosting, Office PBX, etc.
    • Residential and commercial phone and internet services. ...

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  • 09/20/15--18:24: Yeastar
  • Image

    Easy Communication!


    Yeastar specializes in the developing and manufacturing IP-PBX products and is committed to the distribution of new generation technology products in the field of enterprises' communications. In the mean time, Yeastar provides the cost- efficient solutions for ITSP to develop the enterprises ultimate purchase market. With professional and high quality team, Yeastar designs products to worldwide applications and maintains the long-term stability of products to greatly benefit users. Yeastar team gave an insight into users' requirements and ready to listen to their new demands for implementing in the product design and services. Yeastar welcomes the cooperation from various kinds of companies and will sincerely treat them to create the multi-win situation together. Yeastar is working hard to make better office communication experience for you.

    Team
    With professional and high quality team, many of us are seasoned experts in telecom network and VoIP/PBX. A close-knit organization that we are, we aspire, work and achieve together. At Yeastar, we have built a tradition of teamwork. Innovation being our chief motivation, as a Yeastar, every one strives to come up with newer, more stable software and hardware products suitable for the users.

    Our Products:

    1. MyPBX - IP PBX for SMBs Yeastar - MyPBX

    The new compact, feature rich PBX for every-day use.

    MyPBX is a standalone embedded hybrid PBX for small businesses and remote branch offices of larger organizations (2-500 users per site). MyPBX also offers a hybrid solution (a combination of VoIP applications using legacy telecom equipment) alternative for enterprises who are not yet ready to migrate to a complete VoIP solution.

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  • 09/20/15--18:33: VOIP PBX and Servers
  • Please list information about VoIP PBX and Servers on this page. Please keep VoIP PBX and server provider information in alphabetical order, and below any other relevant information.

    Page Contents

    Numeric

    • 1comms.co.uk: Asterisk-based converged telephone system for UK Businesses
    • 1GATE VoIP PBX by Wangate: Cheap VoIP PBX with hardware DSP. Optional internal gateways for Analog/ISDN/PRI/GSM. VoIP resellers welcome.
    • 2daydirect: Brand NEW Small Business VoIP phones. Free 2 day shipping anywhere in the United States
    • 2N NETSTAR PBX, virtual PBX: VoIP PBX system
    • 2N Omega IP PBX: VoIP PBX system
    • 2N VoiceBlue Enterprise: Simple VoIP SIP PBX
    • 3CX: Windows IP PBX / VOIP Phone system
    • 4PSA VoipNow: Hosted PBX software for service providers and enterprises, accelerating SaaS deployment. It runs on Linux environments (RHEL, SuSE Linux, CentOS, Fedora) on x86 and Power PC architecture based servers.
    • 8ix Zenith: 8ix Zenith spells an Asterisk derived IP Telephony application with the most advanced calling and communication features.

    A

    • ALLO PSTN-IPPBX for SOHO with 30 IP extension, upto 6 Analog Extension & upto 4 PSTN trunk
    • ActivePBX™ | Turn-Key Business Phone System $149/mo.

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  • 09/20/15--22:01: IP PBX
  • IP PBX is a phone system that utilizes IP communications. Traditionally IP PBX's are located on site where they can also interface to traditional telco services such as analogue phone lines. The business end users connect via IP to the IP PBX for voice service.


    What is an IP PBX?

    An IP PBX can be referred to as a lot of things: a business phone system, a unified communication system, or simply as a "PBX. ...

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  • 09/20/15--22:20: GSM
  • GSM stands for Global System for Mobile Communications. It is the dominant mobile phone comminucation protocol in Europe and also popular elsewere. The name is also used to describe some of the voice codecs used in the GSM standards.

    This page regards connecting an IP-based phone system directly to the GSM cellular network in addition to connecting a VoIP PBX to the GSM network & PSTN; all-in-one-box. For more information about the codec, see the GSM codec page.

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