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Computerhighguy, The 1721 routers that we were attempting this with are not VoIP-capable. Since the customer's needs are pretty simple, we hoped to do this with 1721 routers since they are available for 1/2 to 1/3 the cost of Cisco's least expensive VoIP router (the 1751-V). I think your...

I'm all ears. I've been working with Cisco products for 9 years now, and I've put up with the same bull from them the whole time. What do you recommend from the Adtran line? -Tom

Yes, and there are only one or two vague references on Cisco's entire site to indicate that the 1721 won't do "voice TDM". When I originally read that, I thought they just meant it couldn't terminate a voice call because it's not a VoIP router. They are so careful to explain that the...

Well, after more than a week working with Cisco TAC, they are now telling me that the 1721 router does NOT support "voice" TDM, only "data" TDM. (that seems pretty pointless... Have you ever found yourself wishing you could share a T1 between two fractional T1 DATA circuits?!) They say we'll...

Hmmm... That helps, but I'm not sure it applies to the 1721. The "type e&m" option is only available when the controller is in "mode cas" (Channel Associated Signaling). However, there is no "mode cas" command available under the controller on my 1721. We're running a very recent release...

Here is the config from one of the Cisco 1721 routers. The other side is identical, except the clock source is line on controller T1 0 (I also tried it with the clock coming from the main Norstar, and everything recovering clock accordingly). The Norstar can see a loop at the far end when we...

We have an almost identical scenerio, with the same symptoms. Does anybody know what the outcome of this thread was? I know this is a longshot, since the thread is three years old, but I'm having trouble finding any support on this setup. We are using two Cisco 1721 routers with...