IP Telephony and Phones

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Hello, We are currently using a Be6000 system and when we schedule a call forwarding on our phones (model 7945) to external numbers, it works perfectly when the original call comes from an internal position, but when it is an external call then this ...

call forwarding.png
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 I have voice router 2921 CME 9.5 .My ip phones registered in it.I have configured telephony-service.But my phones shows me different time than in configured CME.some of them can display 2 hour difference  ,another 6 hours.I tried to upgrade phones f...

Resolved! sip trunk

dear all i have a cisco router 2811  i need  to config sip trunk and  call through  fastethernet  port  is that Possible  or  must have e1/t1 card   if possible  please help   thank you 

 We have a problems with our phones. When we get a call and answer, that call is silent and, at the same time the same call looks like it is on hold, the client calls back in and this appears as a second incoming call - we can only speak with the cli...