IP Telephony and Phones

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HelloThere is a 6921 ip phone in the network.when we communicate form one ip phone to another ip phone then some sound comes into the ip phone.sounds like air.it is too noisy.I want to know that how can i cancil this sound.I have also enabled qos but...

ankur by Level 1
  • 426 Views
  • 1 replies
  • 0 Helpful votes

Hello,I have a strange problem related with the function Call PickUp.First, a few words about the network topology:- there is a Cisco ISR 2801 with CME 8.0- there are SCCP and SIP endpoint registered to it- the same router is a H323 gateway to the IT...

g.doychev by Level 1
  • 961 Views
  • 7 replies
  • 0 Helpful votes

Hi,I'm new to VoIP and have been trying to understand SIP trunks and PRI lines but getting a hard time. can you please provide me a good understanding:which one to use where and why?what does SIP trunk and PRI lines means ..:(Thanks I would really ap...

gavin han by Level 1
  • 222 Views
  • 1 replies
  • 0 Helpful votes

Dear ,I have CME 8.1 and CUCM 6.1, I define the CME as H.323 VG on the CUCM, and I configure a Voip dial-peer to point to CUCM.When I make a call from CME to CUCM the names of the users of CME appears to the phones registered with CUCM, but the names...