Scenario#29 – Interworking error -0x80FF

I came across this issue with one of  our customer last week where a call was coming in to receptionist at Site ‘A’ but she was not able to transfer the call to someone at Site ‘B’. They had Centralized deployment and all phones on branch sites were registered to Central site. The call wasContinue reading “Scenario#29 – Interworking error -0x80FF”

Scenario#25 – MoH file download from Call manager

Came across an MoH issue for a customer where the file was missing from Subscriber. As you may be aware that an MoH file should always be uploaded across the cluster on each server to work properly. If you only upload the MoH file on Publisher then it won’t be replicated on other servers. YouContinue reading “Scenario#25 – MoH file download from Call manager”

Scenario#24 – SIP Calls drop after Silence

Came across a complex situation where customer was using this SIP trunk as an alternative to ISDN-30 (if all channels are used or if ISDN goes down). The ISDN-30 link was working fine but they had issues on SIP trunk (how many times I have heard this?) …. their outbound calls over SIP were usingContinue reading “Scenario#24 – SIP Calls drop after Silence”

DSP, PVDM & Media Resources

The Cisco High-Density Packet Voice Digital Signal Processor (DSP) Module (PVDM2) enables Cisco Integrated Services Routers to provide high-density voice connectivity, conferencing, and transcoding capabilities in Cisco IP Communications solutions. PVDM stands for packet voice DSP module; it is the Cisco product name for the module that provides digital signal processing resources to a system.Continue reading “DSP, PVDM & Media Resources”

Changing MOH file for CME router

If there is already a MOH file running at the CME router, follow the below steps to change it to a new one. Sh flash: 55        7200 Dec 09 2008 10:53:52 Pulse1.raw 56        4000 Dec 09 2008 10:53:54 Ring1.raw 57        4000 Dec 09 2008 10:53:54 Ring2.raw 58        4000 Dec 09 2008 10:53:54 Ring3.raw 59        4000Continue reading “Changing MOH file for CME router”

Scanario#8 – New MOH file not working

MOH file uploaded on Pub under MOH Audio source with number # 5. Customer came back saying that he cannot hear the new announcement as per the new file. I tried to select the file under UDP, Phone and even at Service parameter but nothing worked. I could see the file fine at the Publisher.Continue reading “Scanario#8 – New MOH file not working”

Uploading MOH file CUCM 4.x

Upload the music file 1:    First have your music file recorded as an 8 Khz, 8 bit, mono ulaw encoded WAV file. 2:    The next step is to get your music file on to the Call Manager server. Copy your music file in to this folder on your call manager server ‘c:\Program Files\Cisco\MOH\DropMOHAudioSourceFilesHere’. When youContinue reading “Uploading MOH file CUCM 4.x”

Hardware Conferencing

To make use of DSP resources for a Conference Call, we will have to enable Conference Bridge at the gateway. Configure the following at the gateway: voice-card 0 dspfarm dsp services dspfarm sccp local Loopback0 sccp ccm identifier 2 priority 2 version 5.0.1 sccp ccm identifier 1 priority 1 version 5.0.1 sccp !Continue reading “Hardware Conferencing”