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Legacy PBX to Legacy PBX over IP

l0rnkilian
Level 1
Level 1

‎08-14-2008 12:45 PM - edited ‎03-15-2019 05:02 AM

Hello,

I would like to put together a solution to eliminate our T1 circuits used just for voice and consolidate to our IP network. I have tried Circuit Emulation cards and have not been happy with the results (mainly echo problems). I am interested in trying to set up two routers as voice gateways between the two PBXs. From the Cisco docs I have read, using a VWIC-2MFT-T1 I should be able to configure it as an E&M tie line and then transfer it across the IP network. Do I also need PVDSPs? Has anyone done this and have any recommendations. The two PBXs are connected with tie lines now using service provider T1s.

Much abliged,

Lorn

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Rob Huffman
Hall of Fame
Hall of Fame

‎08-16-2008 07:59 AM

Hi Lorn,

We do use 2811's with the VWIC2-2MFT-T1/E1 quite nicely (not for your exact setup but I don't see any problems :) you will require DSP Resources, PVDM2-32 (for 1 T1) or PVDM2-64 (for 2 T1's)

From this good doc;

http://www.cisco.com/en/US/products/hw/modules/ps2617/products_configuration_example09186a008052c920.shtml#Components

Hope this helps!

Rob

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