Heads Up :
The post you are writing will appear in a public forum. Please ensure all content is appropriate for public consumption. Review the employee guidelines for the community here.
[toc:faq]IntroductionNew tech tips are going to be constantly added for configuration and troubleshooting. This page will serve as the home for those documents.Voice Tech TipsShow Ephone Phone-LoadWireless Tech TipsSecurity Tech Tips
[toc:faq]OverviewBefore placing voice and video traffic on a network, it is important to ensure that there is adequate bandwidth for all required applications. After this bandwidth has been provisioned, voice priority queuing must be performed on all...
When a router is rebooted with out an IOS image file, it will come up in ROMMON mode. This can be a very frustrating experience for users who are not familar with this process.Using this document, you should be able to put a new image on the UC500.C...
We are using DHCP to give out subnet masks. The client gets the address fine but has the incorrect subnet mask. ExampleDHCP Pool of 10.10.10.0/24IP address the client gets is 10.10.10.3 and a netmask of 255.0.0.0.Here is the configuration I have on...
You can download the software from https://software.cisco.com/download/release.html?mdfid=281163511&flowid=77902&softwareid=282762907&release=8.6(2)&relind=AVAILABLE&rellifecycle=&reltype=latest
At the bottom is the software pack. It is around 450 ...
There is a 64 version of this out there today. www.cisco.com/cisco/software/release.html?mdfid=277641082&softwareid=283451126&release=8.1&relind=AVAILABLE&rellifecycle=&reltype=latest2.2.0.8. I am adding this comment in case someone is looking for ...
Problem is likely a codec mismatch. Do you have MTP checked on the trunk between CUCM and CUCME? When you make calls from the phone to CME, are you sure it is negotiating G729? 47 typically means a transcoder couldn't be invoked when it wanted one...
Receive 180 with SDP from privider (G711u)Send 183 with SDP to ALU 4400 (G729)Is there some transcoding setup here? Are you doing media flow through? My guess is that it isn't a problem going from 180 to 183, but a problem with the codecs.
