Termination of channalized T1 on VWIC-MFT

[d.majumdar]

Hi,

We are working on IP telephony solution between 2 locations, i.e US & INDIA.

On the US site we hv the call manager, IP phones and the router with VWIC-MFT, the India site has only IP phones, the problem is can we hv the T1 termination directly on to the VWIC-MFT and the US PSTN calls landing on to the VWIC-MFT.

OR

Do we require an intermediate device in between the T1 and router.

A quicker response is really appreciable.

Rgds,

DM

[thisisshanky]

I believe its a PRI or CAS circuit that you have terminated on the VWIC. Yeah your PSTN circuits (PRI or CAS) can terminate directly on to the VWIC. You will need to add the router with this VWIC as a voice gateway (either use H323 or MGCP).

I bet you either have an IPLC or VPN from India to US. Either ways its a best practice to setup your remote office phones (India) to talk g729 codec while sending calls across to the US to save bandwidth to accomodate more calls.

If you do this, your phones in US will be in one region, while your phones in India will be another region. Now if you plan to do a conferencing between three phones (say one from each region) you will need a device called transcoder to translate the codecs. Typically you can use a 2600 with NM-HDV or NM-HDV2 for transcoding.