you can create a 'dummy dial peer' that will force the router to always use particular settings -
dial-peer voice 1 voip
incoming called-number .
ip precedence 5
Put this at the top of the dial peer list (IOS hunts through dial peers top down) and the 'incoming called-number .' matches on the inwards call leg and then applies the configured settings for the call leg.
I get this a LOT. I'm running a VG200 with NM-HDV, IOS 12.1(5)T9. Just switched from CAS to PRI signaling. Configuring a answer-address voip peer helps, but still doesn't alleviate the problem. (No I'm not upgrading IOS yet, 12.2 breaks my PRI setup for some reason)
I have the following setup:
voice class codec 99
codec preference 1 g711ulaw
dial-peer voice 9 voip
voice-class codec 99
ip precedence 5
That should force EVERY voip call leg to be negotiated at g711ulaw. Doesn't work for some reason. Still get a lot of pre-ietf legs that result in busy signals. From what I've been able to find out, the pre-ietf codec is the default for when it can't/doesn't negotiate the codec properly. Seems that we should be able to define the default so it doesn't fall back to this (un-supported) codec.
When a voip call is made, there is a forward call leg and a return call leg from the other device. Each call leg has to negotiate the capabilities. By creating a dummy dial peer with 'incoming called number .' , the return call leg will match on this dial peer and use the parameters configured under it, so you can control VAD, DTMF relay, codec selection, precedence/DSCP of return packets etc ... Give it a try and see if it help.
The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...
This document describe how DST changes and how time changes are
implemented in DST. Daylight Saving Time (DST) is the practice of
setting the clocks forward 1 hour from standard time during the summer
months, and back again in the fall, in order to make b...