IP Telephony and Phones

This seems like it should be simple, so I'm probably missing something basic.ISR 4351 Router running 17.6 firmware. We're using auto register to connect 8851 phones. Everything is fine except for one little problem. The preferred codec keeps showing ...

I got a MGCP gateway w/ SRST and a T1 PRI trunk for PSTN calls. When I lost the WAN, SRST worked but I faced 2 issues:1. Active calls didn't survive, and2. I couldn't make outbound callsI think I have some workarounds for the 2nd issue. However, the ...

Hi, I have an ATA 191 box, and I'm trying to configure two lines.When I configure the 2nd line, it appears under the "Unassigned Associated Items" section.When I try to reorder the phone button configuration, I get an error: "Fixed feature buttons ca...

Cisco Support Forums,    We are switching out a firewall that has SIP ALG to a Meraki firewall that doesn't do SIP ALG.  There is a Cisco 4321 that is running as a CUBE, it has a private IP interface that is NAT'd from the outside, so now without SIP...

We have a Cisco Model ISR4451-X/K9 router with Cisco IOS XE Software Version 16.03.05 as H.323 voice Gateway and Cisco Call manager version: 11.5.1.22900-28. Voice gateway connected to PSTN with 4 PRI (E1/T1) ports.I set “Mobile Number A” for Directo...

Hi everyone.I have a cisco 2811 with FXO modules that is connected to an Asterisk IPPBX server. Every thing is working fine. But there is a problem with DID. I'm using connection-plar 2000 for forward incoming calls to asterisk. Therefore I can not f...

I have the primary number of my 8851 phone also configured as the 1st line of my Jabber. If I receive a voicemail message, it will activate the Voicemail app in Jabber indicating there's a new message (as well as illuminate the light on the phone) I ...

Hello, I manage two clusters, Cluster A and Cluster B connected over a WAN.Cluster A has a publisher and 8 SubscribersCluster B has a publisher and a Subscriber • CUCM in cluster B is UNABLE to backup to SFTP server in Cluster B network. Error messag...

                                                                                                                                                                                                                                hi I have a 2901 router ve...

Hello, We are currently using a Be6000 system and when we schedule a call forwarding on our phones (model 7945) to external numbers, it works perfectly when the original call comes from an internal position, but when it is an external call then this ...

I have an issue where calls that are transferred to an external number are being dropped. Example: A customer calls in to the call center, tell us they would like to make a payment, so they are forwarded to a self-payment center (external).The agent ...

Hello,In the company I work for, we are running (really old) CUCM 11.5.1 / IP Phone 7841 and using SIP TRUNK as external gateway.Some people in my comany reports blank calls (no audio in either direction) for certain numbers while other ones are work...