IP Telephony and Phones

So, we've been asked to provide a room-based  video-conferencing solution for a company with three offices, 2 in the UK, 1 in China. The requirement is for a free-standing solution, i.e. no CUCM infrastructure, which can provide video links to the ot...

We are upgrading from CUCM 7.1. The new cluster is v9.1 and it was initially configured by restoring an OLD backup of 7.1.. During the upcoming cutover, we want to maintain the most current call forwarding settings for all users/phones.Where is the l...

After loading 9.2.3S on CUCM 8.6.1, my phones will only update some of their config.I've looked at the settings on the phone and noticed the following. The ITL file is not there and  the TFTP server is not listed. The status messages show a TFTP erro...

Hi All,I have a 2851 currently running "flash:c2800nm-spservicesk9-mz.151-4.M5.bin"I's also running the following.sh telephony-service allCONFIG (Version=8.6)=====================Version 8.6 I need to upgrade the IOS to c2800nm-advsecurityk9-mz.151-4...

I don't really touch SIP SRST but i have a unique situation which forces me to use it.  Do I just add the following voice service voip  allow-connections h323 to h323 allow-connections h323 to sip allow-connections sip to h323 allow-connections sip t...

    Good day! I need to find out the command for checking or configiring ringback tone at IOS 15.1. There is SIP trunk between the router and SIP Provider at my office. The phone register at this router(CME). I face the issue. I don't often hear a ri...

I have a 2921 running CME IOS 15.4. I am trying to TFTP to 2921 and it fails. I can TFTP to a 2960.I am using 3com and Solarwinds neither will work with 2921 both work 2960.Anyone have any ideas? I am lost on this. FTP fails as well 

Is there any work around to bypass the 1-180 second rna setting on a line group to allow for the selected dn's to ring indefinitely? thanks,will 

Hi everyone. I need an CUCM ver 9.12 and gateway SRST with IOS :c2900-universalk9-mz.SPA.154-1.T1.bin". but the IP phones model 8831 (cmterm-8831-sip.9-3-3-5.cop.sgn) not registering when the router SRST is active. The other SIP phones 69XX if are re...

  Hi all can someone help me out with digit manipulation i have 5 extensions numbers  that al start with 7XXXX ( al different numbers )What i would like to realize is that when one of those extensions make calls out the number presentation wil change...