A trunking gateway is an interface between VoIP and PSTN. It is a device whereby the VoIP line and PSTN line are connected so that an end user can use PSTN phones to make a call over VoIP.

Protocols On E1/T1 side:SS7, PRI, QSIG, R2, V5.2; on IP side: SIP, MGCP, H.248

PDH system includes two major communication systems, ITU-T E1 system and ANSI T1 system.
The E1 system is dominant in Europe and some non-Europe countries. The T1 system is dominant in USA, Canada and Japan.
One major difference between them is :
E1 provides 2.048 Mbps bandwidth but T1 provides 1.544 Mbps bandwidth.

Trunking Gateways

Roytel E1/T1 trunking gateway, RT-EIMS2002

Description
Roytel RT-EIMS2002 is a digital trunking gateway which connects PSTN/PBX to IP network. It has carrier-class performance and adapts slot insert frame which can be easily configured as requirements. It provides a maximum of 8 E1 ports in one single device.
RT-EIMS2002 offers 5 modes in one single device, 1/2/4/6/8 E1/T1 ports.
Features
● Carrier-class performance
● Optional and extendable interfaces boards
● 1.5U standard rack-mounted
● Web console
● Flexible call routing
● Support interconversion among multi-protocols, E1<-->IP, E1<--->E1, IP<-->IP

Application networking diagram
The trunking gateway is deployed for telecom carriers.


The trunking gateway is deployed for enterprise.



Home page:http://www.roytel.com.cn/index.php?lang=en
Headquarters: Shenzhen, China
E-Mail:kc@roytel.com.cn
Skype ID: yong_chen5
Telephone: +86 755 26743712

OpenVox E1/T1 Truck Gateways, DGW-1001R/DGW-1002R/DGW-1004R

Home page:OpenVox
Headquarters: Shenzhen, China
__E-Mail:__sale@openvox.cn
Telephone: +86 755 82535461

See also

• VoIP Hardware