IP Telephony and Phones

What software options are available?

i need to upgrade my cucm 10.5.1 to 12.5 on ESXI 6.5 , can i upgrade directly? or there should be versions in the middle?

Hi Guys, What is the best solution from Cisco for these requirements : Analogue Extensions - Up To 200 ExtensionIP Extensions - Up To 200 ExtensionMobile Extensions - Up To 200 ExtensionTrunk Line - 100 Lines, Interfaces (Media Gateway) Lan/Wan 2Fast...

I have two CUSP that I send calls to using Dial-Peer Voip. I can send calls to either CUSP-A or CUSP-B,  but preferably I would like to be able to send calls to the CUSP-A first and then in the event CUSP-A is unreachable send calls automatically to ...

We have a staff person that works in 2 different offices with 2 different phone numbers and have a Unity integrated with Outlook so that a new voice mail message is sent to her Outlook email account with the .wav attached.  Currently the emails come ...

Need to know if there any way for a trainee to listen in on calls someone takes with CIPC?  I was thinking maybe the trainee could setup CIPC with the trainer's number to see if they can listen in once the trainer answers. However, I'm not sure if CI...

Hi!  I am trying to get a new ATA122 working with an HP fax machine and our new VOIP service with RingCentral.  The phone line goes from the fax machine to the ATA122 and the ATA to the internet.  If I retry an outgoing fax enough times, it will even...

Every hour we are receiving 3 alerts:SeverityMatch : CriticalMatchedEvent : Jun 25 11:36:05 CUCMPUB user 2 platform: The local NTP client is off by more than the acceptable threshold of 3 seconds from its remote NTP system peer. The normal remedy is ...

1. I have signed phone csr's with an offline CA.2. i imported the phone certificates into CUCM How do i run a report that shows me which phone has an lsc installed and which one has not?Without this information it is extreamly difficult to see what p...

Hello i have recently set up a new instance of CUCM and CUC and have been following a guide from Cisco on how to properly setup a SIP trunk between the 2 (article found here: https://www.cisco.com/c/en/us/support/docs/unified-communications/unity-con...

I'm trying to figure out why a 6945 phone only shows internal missed calls. The user says it used to work for all calls but quit doing that a while back. I gave her a 7841 which works perfectly for internal and external calls.I have the phone here, t...

Hi,We have a customer who has in Active Directory for the telephoneNumber field more digits then needed. They use this to give more information to end user when looking up this user. For jabber it causes problems.Example:In AD: +44XXXXXXXXXXYYYYWe wa...