Voice gateways, SLT and PGW

[wonderwall_85]

Hi everyone,

I dont know if its the right place to start this discussion so forgive me if i am wrong.( I also have opened a discussion in IP telephony portion)

The company in which i am currently wokring is running a call center and IPT as well. i will try to explain the scenario

voicegateways (AS5400 and AS5350 routers with IOS Version 12.4(15)T7)

SLT (2651XM with IOS Version 12.2(8)T10)

PGW (PGW 2200 with SunOS 5.10, MGC)

I was under the impression that if you want to connect  PSTN and a voip network you need a PSTN gateway. So why are we using 3  different types of hardware.

Follwing are the explainations in a doucment given to me

the  Cisco PGW 2200 provides service providers with the capability to  seamlessly route voice and data calls between the PSTN and New  World  packet networks.

Cisco 2611 Signaling Link Terminals

(E1 terminates, Take Signaling part and send B n D channels to Voice gateway, Signaling part is resolved by it self and PGW)

Voice Gateways

allows  terminals of one type, such as H.323, to communicate with terminals of  another type, such as a PBX, by converting protocols. Gateways connect  an organization’s network to the PSTN

Any information is much appreciated

[Marwan ALshawi]

have you read this

End-of-Sale and End-of-Life Announcement for the Cisco PGW 2200 Softswitch and Software

http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/vcallcon/ps2027/end_of_life_notice_c51-676990.html

hope this help

[wonderwall_85]

Thanks for the response but i was already aware of the fact but this doesnot mean that we should stop using it. BTW they paid a HUGE amount for this whole setup.

[Marwan ALshawi]

i think in the link last date of support is July 2017 !