IP Telephony and Phones

We are facing issue with Cisco IP Phone 7821 model.... CME 10.5 version we are using ..IP Phone is not registering ...when we go to the setting its ask us for credentials to check the settings ..where we are trying to check IP address parameters. one...

We've hit BugID CSCul26124 ("Time wrong on a 7841 phone") The public bug details offer no help. Has anyone got any suggestions for working around this? Thanks, GTG

I need to go on a VMWare course , Though I configure CUCM , UCCX, UCCE , Installs on MCS, Upgrades, ES etc. I have little experience from a Virtual  point of view. I’ve seen various courses but not sure of the one to take - I`m not after the full cou...

Hi Team I have a doubt that in IP telephony environment, Can we use the same VLAN for VOice and DATA. For example : If I am using vlan 2 for data, so it may use for voice as well ?? Thanks in advance.

Hi, Please consider following configuration: dial-peer voice 1 voip incoming called-number . dial-peer voice 2 voip incoming called-number . session protocol sipv2 Looking into documentation I did not find anywhere dial-peer protocol to be used for...

Hi All,I have a problem with an isdn circuit layer 2 and have been through other postings but none have helped so far.*Oct 2 12:06:49.391: %CONTROLLER-5-UPDOWN: Controller E1 0/1/0, changed state to down (AIS detected)*Oct 2 12:06:49.395: %ISDN-6-L...

hi all,  i have problem, i have 3 subscribers, subs A, subs B, subs C. when one of the subs down, the ip phone chose upgrading firmware not switch to another subs. can anyone help me about this case? Thanks

Hi All, We have an Analog GSM Gateway currently connected to the Voice Gateway via FXO Port. Once we are calling the Number on the GSM Gateway which has a incoming configuration on the Voice Gateway to CUCM, caller ID/calling number is unknown. This ...

In Call Manager I am trying to add a user as a assistant to a manager but when adding the user in the manager configuration screen I receive this error message. I did see a previous post about restarting the IPMA service however that is not an option...

I have a 7975 IP Phone.I did a Soft Reset with 123456789*0# and it got stuck in upgrading.Then I did a Hard Reset with 3491672850*# and now I can see all the lights of the phone turning on and off just for once and then black screen for eternity. I'v...

Gateway is SIP with pri ni2 to pstn. Debug isdn q931 shows calling party name coming in correctly from telco, just does not get to phone. In CallManager gateway is Device > Trunk (SIP)Callmanager 8.0.3a with IOS 15.1.2.T, SIP Phone Load 9.0.3