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voip-info.org

May 28, 2013, 4:27 pm
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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.

Update: We have added theFacebook Like and Google +1 button to the top right corner of all pages on Voip-Info.org. Please help recommend the wiki by clicking on them. We also now have Google+ page here and a Facebook page here. Visit them and add us. Thanks!


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Layer Four Solutions Reviews

May 28, 2013, 5:15 pm
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Layer Four Solutions is an Internet Service Provider, business and residential VoIP service provider, web hosting provider, and cloud services company.

Note: Our site editors would caution you before using this company. We cannot recommend them.


Layer Four offers different business VoIP plans including a Hosted Cloud PBX, which is tailored for small businesses. Layer Four Solutions also offers SIP service at $19/month with unlimited extensions.

Read reviews about the VoIP provider Layer Four Solutions below, or write your own.

Write a Review


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Business Phone Systems

May 29, 2013, 3:38 am
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Business phone systems are an essential part of any business operation. Businesses can opt for a traditional phone system or a business VoIP system. Typically, employing a VoIP in a business phone system has the potential to save businesses up to 70% of their monthly phone bill when compared to a traditional phone system. Compare business phone system service plans, features, pricing, and customer reviews below.

Business Phone Systems by Country


United States

  • 1Pipe Telecom | OnePipe is a CLEC providing SIP Trunking, Hosted PBX, IP and other services, we provide services on our own network and gateways.
  • 3CX | 3CX is the developer of the award-winning IP PBX, 3CX Phone System for Windows. 3CX Phone System provides enterprise-style PBX features and Unified Communications features such as conferencing, viewing the presence of your colleagues, call queues and more. Download the Free Edition here.
  • 45meeting Simple online conference solution for small business.
  • 8x8, Inc.
  • Affinity SIP is a Business VOIP service provider. Great rates for international VOIP calling U.S. DIDs $1.00, Inbound/Outbound $0.009/min, E911 and CNAM free! Wholesale SIP Trunks. Service works with all IP PBX including Asterisk, FreeSWITCH, SIP, IAX2, Elastix, trixbox®, FreePBX, and more. Redundant gateways for 100% up-time. Try SIP Affinity now risk free! Instant activation with free test credit.
  • ActivePBX™ | Turn-Key Business Phone System $149/mo.
  • Alcazar Networks Inc. is offering Wholesale Origination / Termination / Free Toll Free Termination - Get paid for your toll free traffic! We provide high quality, dependable access to over 3100 rate centers and instant access to over 1,200,000 DIDs including T38 capability on 100% of our DIDs, CNAM, e911, and local number portability. Wholesale SIP
  • Big Bang Systems provides on premise and hosted pbx and ivr solutions for company with 50+ employees.
  • Bluestone Communications provides enterprise class hosted PBX services with QOS measurement from our servers to your site for a fundamentally better service. Extensive array of facilities and apps, just $15 per phone per month.
  • Cheap VOIP Inc Wholesale to the public, great rates and good quality.
  • DIDforSale Buy unmetered Inbound SIP DIDs for just $7.50 all over us. All DID comes with 20 channels.
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Asterisk cmd SayUnixTime

May 29, 2013, 3:45 pm
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Synopsis

Says a date and/or time to the caller.

Syntax

SayUnixTime(unixtime,timezone,format)

Description

Uses some of the sound files stored in /var/lib/asterisk/sounds to construct a phrase saying the specified date and/or time in the specified format.

unixtime is the date/time to say, represented as a standard unix timestamp (number of seconds since 1 Jan 1970). If this parameter is omitted, the default value is the current date/time.

timezone specifies the timezone that the unixtime is in. If this parameter is omitted, the default value is the time zone of the computer. It sould be specified as a unix timezone (see your /usr/share/zoneinfo directory for a list of timezones known to your computer), for example, "Pacific/Samoa".

format is a string specifying in what way to say the date/time. It uses a format based on the strftime(3) unix system call, if you're familiar with that. If omitted, the default value is:

ABdY \'digits/at\' IMp

This would result in a phrase like this: "Monday January twenty first 2003 at seven fifty two p m". Note that the 'digits/at' part refers to the sound /var/lib/asterisk/sounds/digits/at.gsm, i.e. it is a relative pathname to a sound file.

SayUnixTime is Multi-Language-compliant. It will say the date/time in the language set by the channel or overriden with the SetLanguage command, if the localized sound files for that language are installed.

Format Codes

\'filename\' (1.4) filename (1.6+)filename of a soundfileIn Asterisk version 1.4 backslash and single ticks (\') around the filename are required (but not in version 1.6).
A or aDay of weekSaturday, Sunday, ..., Friday
B or b or hMonth nameJanuary, February, ..., December
d or enumeric day of monthfirst, second, ..., thirty-first
YYear
I(capital eye) or l(lower ell)Hour, 12 hour clockone, two, three, ..., twelve
HHour, 24 hour clock?, oh one, oh two, ..., oh nine, ten, eleven, ..., twenty-three
kHour, 24 hour clock?, one, two, three, ..., twenty three
MMinute?, oh one, oh two, ... ...
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Asterisk func strftime

May 29, 2013, 3:46 pm
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STRFTIME

Formats the datetime

Synopsis

STRFTIME([<epoch>][,[<timezone>][,<format>]])

Description

Formats the time specified by <epoch>, localized to <timezone>. The format comes directly from the underlying C function strftime(3). If <epoch> is not specified, defaults to the current time. <timezone> likewise defaults to the timezone on the host computer. A list of possible timezones may be obtained from the directory listing in /usr/share/zoneinfo. The default format is %c.

This example sets the variable CallTime to the correct local time string in the format Unix utilities like `touch` want, i.e. YYYYMMDDhhmm:

exten => s,n,set(CallTime=${STRFTIME(${EPOCH},GMT+8,%C%y%m%d%H%M)})

Format String

This will vary from distribution to distribution, as their are different implementations of strftime. If these values do not work correctly on your system, please consult the man page for your implementation of strftime (you can do this by running `man 3 strftime` from your server's command line).

The following values are based on an <epoch> value of 1185130650 (obtained via the ${EPOCH} variable) at -0400 or Eastern Daylight Time (EDT). The output of the Unix `date` command is:

[root@asterisk]# date
Sun Jul 22 14:57:30 EDT 2007

These format strings are from the CentOS 5.0 man page for strftime(3):

Format String Description Example
%aThe abbreviated weekday name according to the current locale.Sun
%AThe full weekday name according to the current locale.Sunday
%bThe abbreviated month name according to the current locale.Jul
%BThe full month name according to the current locale.July
%cThe preferred date and time representation for the current locale.Sun Jul 22 14:57:30 2007
%CThe century number (year/100) as a 2-digit integer.20
%dThe day of the month as a decimal number (range 01 to 31).22
%DEquivalent to %m/%d/%y. (Yecch — for Americans only. Americans should note that in other countries %d/%m/%y is rather common. This means that in international context this format is ambiguous and should not be used.)07/22/07
%eLike %d, the day of the month as a decimal number, but a leading zero is replaced by a space.22
%FEquivalent to %Y-%m-%d (the ISO 8601 date format).2007-07-22
%GThe ISO 8601 year with century as a decimal number. The 4-digit year corresponding to the ISO week number (see %V). This has the same format and value as %y, except that if the ISO week number belongs to the previous or next year, that year is used instead.2007
%gLike %G, but without century, i.e., with a 2-digit year (00-99).07
%hEquivalent to %b.Jul
%HThe hour as a decimal number using a 24-hour clock (range 00 to 23). ...
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Asterisk func strptime

May 29, 2013, 3:46 pm
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Synopsis:

Returns the epoch of the arbitrary date/time string structured as described in the format.

Description:

STRPTIME(<datetime>|<timezone>|<format>)
This is useful for converting a date into an EPOCH time, possibly to pass to an application like SayUnixTime or to calculate the difference between two date strings.

Notes

  • *CLI> show function STRPTIME

Return value

Returns the string representing the unix time in seconds since the beginning of the epoch (Jan 1st, 1970)

Example

exten => s,1,Set(foo=${STRPTIME(2006-03-01 07:30:35|America/Chicago|%Y-%m-%d %H:%M:%S)}
should set foo to the value "1141219835"


See also



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Enterprise VoIP

May 29, 2013, 11:46 pm
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Enterprise VoIP is a term to describe the unified communications systems typically utilized by medium to large businesses and corporations. Most large businesses employ an enterprise VoIP solution instead of a traditional telephone system in order to drastically cut costs and increase their bottom line. In addition, enterprise VoIP providers offer solutions that extend far beyond what is possible with a traditional telephone system.

This is a list of enterprise VoIP providers. These companies typically support multi-line telephone systems, PBX gateways, on-premise PBX systems, and hosted VoIP. Please add enterprise VoIP providers to the list below.

  • 1Pipe Telecom | OnePipe is a CLEC providing SIP Trunking, Hosted PBX, IP and other services, we provide services on our own network and gateways.
  • 45meeting Simple online conference solution for small business.
  • Affinity SIP is a Business VOIP service provider. Great rates for international VOIP calling U.S. DIDs $1.00, Inbound/Outbound $0.009/min, E911 and CNAM free! Wholesale SIP Trunks. Service works with all IP PBX including Asterisk, FreeSWITCH, SIP, IAX2, Elastix, trixbox®, FreePBX, and more. Redundant gateways for 100% up-time. Try SIP Affinity now risk free! Instant activation with free test credit.
  • ActivePBX™ | Turn-Key Business Phone System $149/mo.
  • Alcazar Networks Inc. is offering Wholesale Origination / Termination / Free Toll Free Termination - Get paid for your toll free traffic! We provide high quality, dependable access to over 3100 rate centers and instant access to over 1,200,000 DIDs including T38 capability on 100% of our DIDs, CNAM, e911, and local number portability. Wholesale SIP
  • Big Bang Systems provides on premise and hosted pbx and ivr solutions for company with 50+ employees.
  • Bluestone Communications provides enterprise class hosted PBX services with QOS measurement from our servers to your site for a fundamentally better service. Extensive array of facilities and apps, just $15 per phone per month.
  • Net-Voice Telecom NVT is a Leader in IPPBX and Sip Trunking with Office Located in NY and FL we have extremely competitive Packages for Small to Enterprise class Businesses
  • VOIP Essential offers high quality SIP termination services to businesses in the US and Canada. We specialize in Dialer Traffic and provide amazing flat rate plans to low/high volume call centers and enterprises. We also provide wholesale services to several destinations including the Americas, Europe, and Asia. Call now for instant account setup and free test credit. Contact: Sean on +1(631)2292925 or visit www.voipessential. ...
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VOIP Service Providers Business

May 30, 2013, 12:17 pm
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This is a list of Business 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:


VOIP Service providers divided by country/continent:

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.


List of Service Providers:


Alliance Phones is your business ally, when it comes to business communications. We specialize in reliable Hosted PBX systems.

Here is what you will get if you choose Alliance Phones as a business partner.

  • Unlimited Minutes (US and Canada)
  • Advanced phone features (Follow Me, Call Forward, Auto Attendant)
  • No initial setup fees
  • Easy monthly contract

http://www.Executivetelephony.com-Multi Tenant SIP VoIP PBX Dallas Ft Worth. Available to end users and resellers. Host based solutions starting at $145/month that includes unlimited trunks and incoming calls.

Dallas 972.293.3867
Ft Worth 817.329.5521



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Business PBX

May 30, 2013, 12:18 pm
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PBX systems were designed for businesses. The private branch exchange system serves organizations, offices, and businesses by establishing an internal network of telephones. Business PBX is a redundant term in this sense, though today residential VoIP services may be based on PBX systems.

In the 1990s innovations led to new PBX technology, namely VoIP and hosted PBX. VoIP and hosted PBX allowed smaller businesses to take advantage of complex PBX functions and features that were not practical before. In the past, PBX systems were incredibly complicated and expensive to setup and maintain, making it difficult for small businesses to use.

There are other business telecommunications systems such as Centrex, but business PBX systems have become versatile enough to offer equal or greater features for similar cost.

Small Businesses

Business PBX is available for SOHO, SMB, etc. Business PBX providers have a variety of options and scalable systems.

Hosted PBX

Hosted business PBX is housed off-site with the provider. No hardware beyond phones and an Internet router are required. A hosted PBX is charged per user, which is cheaper for smaller businesses than installing expensive equipment to run a PBX on-site.

Virtual PBX

Virtual PBX for business is a stripped down hosted PBX, and is usually designed for very small enterprises. Outbound calling is not usually included.

Larger Businesses

IP PBX

On-premises IP PBX is useful for large businesses, where paying for each user is impractical. Large business PBX systems need far more maintenance, but an IP PBX can save money by using software to replace PSTN equipment. An alternative is managed PBX, which is still on-site but maintained by the service provider.

See also

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VOIP Service Providers Residential

May 30, 2013, 6:40 pm
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Sip Trunking Providers

May 30, 2013, 6:43 pm
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This page is a list of SIP trunking providers around the world. Please keep this list in alphabetical order. SIP providers looking to add their services can do so in the list below.

Country specific pages:

Aloha Connect Part of the Aloha Telecommunications Group, a UK National operator. Aloha Connect provides a simple platform to provision a prepaid Free SIP trunk with options to purchase DIDs (numbers) from over 50 countries. Aloha focuses purely on the quality side of the market (especially in regards to international calling). UK and Mobile calls are some of the cheapest rates on the market.

AVOXI Inc AVOXI virtual call center solutions provide virtual call center products like SIP trunking and VoIP gateway solutions, with international toll-free numbers. Contact AVOXI at +1-770-937-9735 to learn more about these products and services.

1comms VoIP provider for UK Businesses. Sip trunk services, UK DDI's and Asterisk Support for business users and resellers. White Label fully itemised per second billing.

1Pipe Telecom | OnePipe is a CLEC providing SIP Trunking, Hosted PBX, IP and other services, we provide services on our own network and gateways.

Alcazar Networks - Wholesale Services Over 3,100 DID rate centers. Per minute pricing as low as $0.0005/minute. Per channel pricing as low as $2.00/channel. DIDs as low as $0.10/each. A-Z termination. Over 1,200,000 numbers in DID inventory.

Smart Voice Network offering service to Carriers and Call Centers with unique ability to cap rates and manage sub accounts. VoIP Carrier with US & International Canada $.009 UK, France 0.0082,Mexico $0.009, China 0.0088 for domestic $.008 USA Termination and Origination, offers termination & origination for Mexico $0.009 per minute and DID's for $1.00__ per month all with unlimited channels / concurrent calls. Competitive High Quality NPA-NXX rate deck, International Carrier rates, and DID channel pricing. For calling cards, mobile dialer, Efax solution, Bulk SMS and white label for the best web conference we will host it for you and payment solution
Call us at 760-517-6724.
Email us: www.smartvoicenetwork@gmail.co.
Skype: william.shihata1
Business Voip
Hosted Voip
Calling Cards
SMS Voip
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Personal VPN

May 31, 2013, 10:21 am
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VPN stands for Virtual Private Network. A personal VPN is a secure connection between an end user and a secure server that allows the transfer of encrypted data to travel from user to server and vice versa. Personal VPNs are useful for securing a number of server situations such as WiFi hotspots, shared networks, hosted VoIP, and more. Many companies as well as large corporations and enterprises all have a VPN set up to ensure that their data and communications are protected. A personal VPN is a Virtual Private Network that can be set up by an individual.

Personal VPN Providers


Below is a list of personal VPN providers


See also

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VOIP and VPN

May 31, 2013, 10:22 am
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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. 85% 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.

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

VoIP and VPN Forums:

Tunnel methods


Articles

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OSDial

May 31, 2013, 1:32 pm
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Image

Page Contents

General Information

OSDial (OpenSource Dialer) is a full featured GPL dialer for call centers which does Manual, Power and Predictive dialing out of the box. It is easily installed through one of our .iso images which will make a complete install.

The OSDial server(s) use the Linux OS known as CentOS version 5.5. The OSDial server software is also compatible with RedHat Enterprise Linux (RHEL) 5.

The OSDial Agent Interface is accessed via web-browser. The OSDial Agent Interface is fully compatible with Firefox and Google Chrome.

To download:
http://www.osdial.org
http://sourceforge.net/projects/osdial/
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Nextiva Reviews

May 31, 2013, 1:53 pm
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Nextiva is a business hosted VoIP service provider that services the United States and Canada. Nextiva provides Hosted PBX VoIP service.
Nextiva is simplifying the way businesses communicate. Please find reviews on Nextiva VoIP service below.

Write a Review


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Foehn Reviews

May 31, 2013, 1:54 pm
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New Software Releases

May 31, 2013, 2:36 pm
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This page is to inform on various VoIP related software releases.

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

Page Contents


May 2013


April 2013

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VOIP Service Providers Business Europe

May 31, 2013, 10:42 pm
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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 labanguage 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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Grandstream GXP1400

June 1, 2013, 7:43 am
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Grandstream GXP1400 Small to Medium Business HD IP Phone



gxp1400-1405.jpg


The Grandstream GXP1400 IP Phone delivers superior HD audio quality, rich and leading edge telephony features, personalized information and customizable application service, automated provisioning for easy deployment, advanced security protection for privacy and broad interoperability with most 3rd party SIP devices and leading SIP/NGN/IMS platforms.

The Grandstream GXP1400 IP Phone is a perfect choice for small-to-medium businesses looking for a high quality feature rich IP phone at an affordable cost.


Features


  • 128x40 pixel graphical LCD display
  • 2 line keys with dual color LED 1 SIP account and up to 2 call appearances 3 XML programmable context sensitive soft keys 3-way conference
  • HD wideband handset hands free speakerphone with advanced acoustic echo cancellation
  • Phonebook with up to 500 contacts and call history with up to 200 records
  • Automated personal information service (e.g. local weather) personalized music ring tone/ring back tone
  • Dual switched auto sensing 10/100 Mbps network ports
  • Automated provisioning using TR 069 or AES encrypted XML configuration file, SRTP and TLS for advanced security protection, 8021x for media access control

Feature Keys


  • 2 line keys with dual-color LED and 1 SIP account
  • 3 XML programmable context sensitive soft keys
  • 5 navigation/menu/volume keys
  • 8 dedicated function keys for:
    • Hold
    • Transfer
    • Conference
    • Volume
    • Headset
    • Mute
    • Speakerphone
    • Send/Redial


Grandstream gxp1400.jpg



Telephony Features


  • Hold
  • Transfer
  • Forward
  • 3-way conference
  • Call park
  • Pickup
  • Shared-call-appearance (SCA)/Bridged-line-appearance (BLA)
  • Downloadable phone book (XML, LDAP, up to 500 items)
  • Call waiting
  • Call log (up to 200 records)
  • Off-hook auto dial
  • Auto answer
  • Click-to-dial
  • Flexible dial plan
  • Hot desking
  • Personalized music ringtones
  • Server redundancy
  • Fail-over


Protocols and Standards


  • SIP RFC3261
  • TCP/IP/UDP
  • RTP/RTCP
  • HTTP/HTTPS
  • ARP/RARP
  • ICMP
  • DNS (A record, SRV, NAPTR)
  • DHCP
  • PPPoE
  • TELNET
  • TFTP
  • NTP
  • STUN
  • SIMPLE
  • TR-069
  • 802.1x

Voice Codec


  • Support for:
    • G.723.1
    • G.729A/B
    • G.711µ/a
    • G.726-32
    • G. ...
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Asterisk CRM Integration

June 2, 2013, 3:45 am
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Asterisk, being open source, can be integrated with a whole lot of different software solutions to enhance, improve and facilitate general users. One of such technological marriages is Asterisk-CRM integration. Asterisk-CRM Integration can provide your Asterisk with the ability to manage your customers directly. The CRM integration to Asterisk provides notes uploading, call recording, customer management, number lookups and a number of other benefits that a standalone Asterisk or independent CRM can not provide.

There are number of products available in the market to achieve this goal. This page enlists all of such products and solutions with alphabetical sorting.


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