IP Telephony and Phones

Quick question:  I want to change the 'External Number Mask' field under Directory Number Information for several Voicemail Ports in CUCM. After I save and apply these changes in CUCM, will I need to reset the port group in CUC for the changes to be ...

Hi,I have one question regarding RTMT. In the regeneration article is written:Certificates should be regenerated before they expire. When the certificates are about to expire you will receive warnings in RTMT (Syslog Viewer) and an email with notific...

Hi,We're planning to move from one sip provider to the other.We connect the cube to the other sip trunk and configure inbound/outbound dial peers.The new provider gives us a new number range for testing.I didn't configure new dial peers for the new s...

Hi, I want to make a VOIP solution including BE6000M as call manager and ISR as VOICE gateway. But I am not sure how to estimate or size voice router to support 200-300 cisco 7821/8811/8832 ip phones? Pls advice how to size the gateway requirement

I have the Cisco IP Communicator (8.6.6.51) installed on my PC. In PREFERENCES/NETWORK,  I need to set my tftp.  I can't get it to stick, so i have changed the tftps in the registry successfully. but i cannot get the radio button to stick ("use these...

Hello,   I'm trying to figure out the maximum amount of participants one can have in one conference? I've been trying to research this, but Cisco doesn't seem to provide any documentation. Today I was made aware that I couldn't get more than 48 users...

Dears Experts,I was sizing the DSP resources fro the router 4331 with 2 port E1 card by a  DSP calculator tool, hence with PVDM 64 with G711 codec i can have 60 channels that is good enough, my router will be only used for PSTN calling  My question i...