IP Telephony and Phones

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I am working with a network phone system running CUCM 10, alongside CER and some other similar systems. Inside the phone network, calls to 911 are failing. The caller gets a rapid busy signal when they try. I can see the attempts in the CER call hist...

Since moving to our Cisco phone solution, we've been plagued by accidental 911 calls.  When the users do this, they hang up and the cops show up.  We've tried counseling the users but in the end I feel like this is something we should be able to prev...

I have probably deployed about 80 7960 IP phones. Over time, about 10 or 12 of these have been RMA'd because suddenly the footstand just fails and will not latch into place, it just goes completely floppy. I can say with almost complete certainty tha...

Hello, Faced an issue with the our Analog lines terminated on FXO ports. After long time working fine, the caller-ID stopped displaying for called incoming from the Analog lines on our Gateway conneted to Du telephone provider in Dubai Knowledge Vill...

This morning when we came into the office, several phones are stuck in VPN mode, not sure what happened last night, they were fine day before yesterday. All phones are impacted, most are 8XXX series. We tried reboot on one of the phone initially and ...

Hi I purchased a couple of used CP8865 phones and Im trying to get them working using CUCM 14.0.1.I added the phones in CUCM using their MAC address. According to the log on the phones, they can get their cnf.xml.sgn files. Even though the phones sho...