IP Telephony and Phones

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I've followed the directions in the Cisco Features and Services guide for CCM 5.1 to configure the auto attendant. When I try to log in, I get the error message "your administrator must associate the phone with a valid application user". I've made ...

Hi all,I am configuring a callmanager express 4.0 on a cisco 2821, from my configuration i have same dial-peer configured to reach to the pstn without clir, but i have also configured same dial-peer with clir restricted, i have user the caracter # to...

patcbr600 by Level 1
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  • 1 replies
  • 0 Helpful votes

We are experiencing voice cutoff with SIP trunk. the scenario is, when making outbound call from an IP phone to PSTN phone, CCM delivers through SIP trunk to GW, when far side answers the call, the first or two words are always missing. However when...

tapk5 by Level 3
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  • 6 replies
  • 0 Helpful votes

i hav call manager 4.0(1) and i need to support 7911,7931,7941,7961,7970 so i am asking if there any firmware patching for this ip phones to be supported on that call manager if not how can i upgrade my call manger to support this ip phones