There are quite a few issues which you may come across while configuring Music on Hold. As of SRST/ITS 3.0 an IOS branch gateway has the capability to function as a multicast Music on Hold (MoH) resource. This allows for a distributed MoH design where MoH at remote sites is provided by the local gateway,ContinueContinue reading “MOH Issues and Resolution”
Monthly Archives: June 2010
How to resolve Replication Issues
So many times in real world you will come across ‘Database replication Issues’. Replication Issues are also very much possible during your CCIE lab so one must be prepare to deal with such Issues. How can you find if your cluster has proper replication? Here are few tools to find out replication Issues: RTMT: RTMTContinueContinue reading “How to resolve Replication Issues”
Scenario#2 – Extension Mobility won’t work CUCM 6.1.1
I have come across so many customers who have the same issue – Extension mobility won’t work when you try to login. It will log you in but then quickly logs out the users. The only workaround is as follows: Restart the TFTP service on all servers Restart the Extension mobility service on Publisher RestartContinueContinue reading “Scenario#2 – Extension Mobility won’t work CUCM 6.1.1”
MOH Configuration
Music on hold is a very useful feature in Call manager which is used for streaming music when you put a PSTN phone or an internal IP phone on hold. I will discuss briefly how it is configured and how you may use CUCM to stream music from remote gateways. Go to Media Resources >ContinueContinue reading “MOH Configuration”
IP Phone Background Image
Background Image on Gen 2 and Gen 3 Cisco IP phones can be changed by using the following procedure. I will be showing you how to do for a Cisco 7965 IP phone but the same procedure can be used for other IP phones (like 7941. 7961, 7945 etc). The only difference between different familyContinueContinue reading “IP Phone Background Image”
Scenario#1 – VG224 – Strange DTMF behaviour
Problem description: One of my customer reported an issue with their VG224. All Polycom conference phones connected to the Vg224 were facing an strange issue of DTMF tones not recognized by PSTN. Users trying to get into a MeetMe conference were having tough time as their pin was not getting recognised. Analysis & Observations: ThisContinueContinue reading “Scenario#1 – VG224 – Strange DTMF behaviour”
H323 Call Preservation
H323 gateway is a non-survivable endpoint. This means an active call will drop if any call manager goes down. This default behavior of an H323 gateway can be changed by playing with few settings at the CUCM and gateway. At gateway: voice service voip h323 call preserve At CUCM: Allow TCP Keepalive for H323 =ContinueContinue reading “H323 Call Preservation”
MGCP Call Preservation
MGCP gateway is a Survivable endpoint unlike H323 which is not survivable. What does it mean? It means that an active call through an MGCP gateway will not tear-down and the call will be preserved. As discussed already in another section that an MGCP gateway terminates Layer 2 signalling at the gateway while Backhauling LayerContinueContinue reading “MGCP Call Preservation”
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 10.10.210.10 identifier 2 priority 2 version 5.0.1 sccp ccm 10.10.210.11 identifier 1 priority 1 version 5.0.1 sccp !ContinueContinue reading “Hardware Conferencing”
IOS Transcoding
Transcoding is required to enable communication between different Codecs. For example, CUE is G.711 only and will not be reachable from a Branch side if Inter-region codec has been set as G.729. Similarly a UCCX Pilot point is G.711 only and cannot be reached from another site using G.729 codec. To make this communication possible,ContinueContinue reading “IOS Transcoding”
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