Voice over IP

Do I need to have Call Manager in order to change/upload new background images to my phones?  All I have currently is my 2821 with CME installed.Thanks

I have a Cisco 2621 with 2FXS and 2FXO for my landlines, can I setup my 2821 to use my 2621 to make outside calls?Sent from Cisco Technical Support iPhone App

I have an Avaya VPN phone which cannot connect. It is at remote Site B and is behind a Cisco ASA firewall. I am trying to get it to connect to the phone system at Site A. It works just fine if I bring the VPN phone to my home, but it does not work at...

Recently,I capture some RTP packets when user meeting the dialogue jitter and latency.User A using the 3951 ip phone (IP address is x.x.125.206, and x.x.200.165 is the voice gateway's ip address ) , and user B using a mobile phone.User A responds to ...

Can someone tell me how to configure my CUCM 8.6 to connect directly to my SIP trunk provider? (I'm not using CUBE or CME), but instead connecting the SIP trunk directly to CUCM.

Hi Everyone, I have a few required QoS settings for a Voice system between two buildings being routed. (static)I have QoS training coming up but, I just need to know what I have to have to put the basic QoS settings on each edge switch with Static ro...

I want to move the Call manager from one domain to another, if I do that do I need to relicense the call manager? Thanks

We seem to have a problem that during our multicasting sessions (image deployment) in Singapore and Hong Kong the phones randomly keep resetting (they appear to be switching from the phone to the internal computer VLAN). This is happening while the p...

We recently bought brand new 7945G phones from Cisco and we cannot get them to registered. We have configured our server to use TCP and we are using the most recent firmware on the phone. I am thinking something is wrong with our SEP.xml config file....

Hi Experts, what is the default value of carrier delay timer of E1 controller?In which way can i change this value?Regards.

Hi everyone,we are trying to figure out a way to forward incoming fax calls from a specific number to an analog fax connected to a vg224.History: We have big issues with faxes incoming from one company. To rule out all the options we've already check...

Hi,We placed a Debug Ip Packet detail in ACL (any to host destination) but RTP traffic wasn´t see.Rtp session is stablished and debug rtp packets is a hard debug. Debug ip rtp ip and port is not enough information about packet.Sniffer is not possible...

hey fellows, have anyone came across strange phantom calls issues involving PRI switches. issue reported: several times per day all phones in the office will start ring repeatedly and caller ID will present something like 5 or 555 string true that it...