IP Telephony and Phones

I have 15 phones I have put in CCM 3.3.5The first two pwoered up but the thrid tells me registration rejected when it tries to power on.Any suggestions?

Hello Community, I am currently facing an issue with DTMF signaling in my CUCM 12.5 setup involving a CUBE and an ITSP. When I make a call to the number 712022103, the DTMF tones are not being transmitted correctly. However, when I call 781484008 (fo...

Hi guys, I got the above phone and I am trying to set it up to work with an asterisk server. From what I have read, the only way to do this is by using a SEPMAC.cnf.xml that we configure the phone to download from a tftp server that hosts it. The pro...

I have several boxes of enterprise/on-prem 78xx & 88xx handsets that I wish to migrate to 3PCC firmware. These devices are not currently configured on CUCM and I have the appropriate conversion license files for each handset.Although I can manually c...

I understand that CISCO advise that the default admin login and password is Username admin Password admin.However the Cisco ATA 191 supplied to me by BT does not allow me into the device, which suggests that they have configured a different password....

We encountered a bug with a DLL file that was fixed in CIPC 8.6.6.1 but that version appears to have been scrubbed from the internet.We then noticed there's a 8.6.6.17 version but we're unable to download a copy.We've been using 8.6.6.0 for a long ti...

How do you configure TFTP option for IP Phones and a Microsoft DHCPv6 server?  Docs state it should be Vendor ID 9, suboption 1 and then the list of both TFTP IPv6 addresses.  Microsoft has a define Vendor Class, with a field called Vendor ID which a...

We have been using C3900 Since 2013/2014, everything was fine till the day before yesterday when we received error at all devices "Registration Rejected: Max Phones Exceeded"

I want to migrate an application from Cisco Jabber to Webex. What settings are required to ensure Webex connects successfully to CUCM?

Dear people,I just buy the 8845 modelBut i want to connect it to my SIP account at Cheapconnect.netThe device model is FCH2252DF1MAlready have a account at Wedex and at CiscoFirst i need too add new firmware on it because it's a old one  sip8845_65.1...

how to create remote destination profile in bulk. i want bulk creation of remote destinatoin profile, remote destination and user assingnment and extension.  IP Telephony and Phones, CUCM, Unified Communications currently i have existing extensions.