IP Telephony and Phones

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Hi everyone, I recently have started updating our 8800 series phones (specifically 8851s) to 12.8(1) from 12.1(1) and it seems that this breaks the last line remembered.  I think I need guidance, because from what I have been able to find this is the...

Dear AllI have problem with configuring sip trunk on cube, my scenario is like below:ITSP(SBC)>---------<(PBX) CUBE (sip trunk)>----------<ISSABEL>-----------IP SIP Phone                                                  └-PRI[E1]>------------< Panaso...

I have a 8841 that is stuck on detecting network.  IPv4 settings have been manually configured and I can ping the IP phone but the phone does not move past the detecting network message.  I already tried factory reset with the same results. Recreate...

Sloaner72 by Beginner
  • 11 replies
  • 0 Helpful votes

I need to secure voice gateway, but i can't use some commands to enable it as >>voice service voipsipsession transport tcp tls   also >>sip-uacrypto signaling remote-addr x.x.x.x trustpoint VGW both commands don't exist at all when I ...

We had a site that moved from a San Francisco area code (415) to an Oakland (510) area code. The DID's were ported over to the new office location. In CER, the ELIN's did not change. In Intrado the 415 ELIN's are listed and show the correct county th...

Not sure under which category should I post this for best match so I am posting it underCisco Community Technology and Support Collaboration, Voice and Video IP Telephony and Phonesand will be posting under :Cisco Community Technology and Support Col...

bhuarora by Beginner
  • 0 replies
  • 0 Helpful votes

hello all, I need your help please . I have a cucm 12.5 installed with cisco Ip phones 7821 and 8851.My costomer would like when the IP phone who make the transfer  with another IP phone can  retrieve the call if has no answer after the call transfer...

akram.root by Enthusiast
  • 2 replies
  • 0 Helpful votes