IP Telephony and Phones

Greetings, Can someone point me to a document detailing RAID battery replacement instructions for MCS 7845I3-K9-CMC server? Not having much luck online. Thanks

Hello Friends, I would like understand the SIP call flow. When I was reading SRND and other forum article about SIP I was notified that UPDATE message is to send if something is update in the call flow like codec or payload etc. I looked into some UP...

Hello All, Just one Cisco 7945 is rebooting randomly. In the RTMT log, I found DHCP request being sent every time:  Nov 30 09:28:40 CUCM1 daemon 6 dhcpd: DHCPREQUEST for X.X.X.X(PHONE'S IP) from c8:f9:f9:68:a7:db (SEPC8F9F968A7DB) via eth0Nov 30 09:2...

I want to configurate 1 publisher and 9 subscriber.how can I  design and configure ? CUCM 1 publisher 3 call processing Subscriber  3 TFTP Subscriber 3 media resource subscribers

I am struggling with the NTP issue that doesn't permit to create the cluster of CUCM in Vmware. I have verified: 1) NTP running OK on the server 2) Server subscriber was added in System > Server from publisher 3)ntp_stratum -->warning status // Curr...

Hi, I noticed an issue related to call forward. If I forward a DN to a PSTN number, it works fine but If I forward the same DN to a VoIP number of an external provider, it doesn't work. Thanks

Good day all, I using x-lite(sip phone basic),but it just can show caller id on call history for received call,it cannot show alerting name for outgoing call,I have already configured alerting name on other cisco phone line. Any idea?

We are using a CME on 2901 Router.  The problem is that when a call is transfer on any phone which already have two placed calls, then the third call is not transferred and the phone says, "Transfer Is To is Busy". We have configured blind transfer i...

Hi Team, I need your support. I am just trying to setup Fax server. Fax server roles and services mmanager deployed in windows server 2012 r2. Voice gateway 2901 is installed as MGCP analog gateway with consists of 2 FXS and 4 FXO cards. FXO cards co...

Many of our staff members have been receiving calls from an assigned DN. Although the user assigned the number is not making the call. I removed the number from the phone and reassigned the user a new number. This was done several months ago. Today t...