IP Telephony and Phones

Trying to find out if this tells me why calls from a Right FAX server are failing.  The call actually does connect, but it looks like it tries t38, the passthough, but then disconnects.Calls to a specific number are failing from one Right FAX environ...

Hi guysI have CUCM version 9.xI have changed PUB and SUB the ip addressBut when i have deleted the old Ip address for the CUCM into ELM and tried to create a new product instance(changes was only to the ip address.Hostname is the same)  then i reciev...

Hello there,Can anybody give me a clear picture on this situation i have a module VWIC-2MFT-E1 installed on 2821 router. port 0/0/0 is already used and active for 30 channels PRI line, the goal is to have another PRI line 30 channels on port 0/0/1 i ...

Do the 7940 Cisco Phones support Multicast address? and if so where do you set the listening address?

HiWe have Cisco CUCM version 5.1.3-4112-1we are re-hosting and upgrading CUCM to latest version.Since exising version is not available to download from Cisco. We have installed CUCM version 5.1.3-5101-1 on another MCS server and restored  backup take...

Hi,the scenario is: CCM - CUE - VG - H323 - FXO - PSTN.I configured the unity express to transfer the call to the PSTN, the issue is that the FXO ports hang and when I issue show voice call status I see no dsp under the Slot/DSP:Chany one faced this ...

Hi folks,I'm testing the 'call-forward busy' functionality to go to voicemail when second call would be arriving for a DN but it's not working!My config is like below:!call-manager-fallbackmax-ephone 2max-dn 20 octo-linevoicemail 1222call-forward bus...

Hello NetPros,We have about 300 sites, 40000+ users, 700+ GWs and 7 clusters. We believe our CFB resources are not adequately distributed. I need to audit all GWs, find available CFB resources, find the number of heads and configure the correct numbe...

Hello actually recently i installed ip-telephony service in one of my customre sites,i have a unusual issue in this site, my problem is, when someone talking on the phone through the PSTN , if both side of the line want to talk at same time, the voic...

Greetings,Noob here. I am looking to setup CUCM with Exchange 2013 UM to forward external calls from the Auto Attendant for certain extensions back to Exchange to leave a voice message, only at certain times of the day. For example if a external call...

Guys, we all know about debug isdn q931 output message, I've 4 doubts in that. (which are in highlighted form in the attached snapshot)What is meaning & use of Channel ID [which is i = 0xA9839F in our case] (Line 30) ?What is pd & what does that mean...

Hi:I newly configure an Cisco UC-540 for an small company. After reload last night, all local phone cannot register. The only registered phone are on remote office and other subnet. Does anyone coould give me come recommandations?Wayne

Hi,I am working with a customer to upgrade a CUCM 7.0 cluster to 9.1(1a).As part of this I am trying to upgrade the firmware on phones connected to the 7.0 cluster to the default version for 9.1(1a)The have some 7942G phones in a remote office which ...