Maintaining Class of restrictions under SRST and CCME
Very good article on how to maintain the CSS under the SRST mode but it is also true for CCME Config .
http://www.blindhog.net/maintaining-class-of-restriction-during-srst/
Power of Alias command
In Cisco IOS , you have the option to put in place your own command with the command alias .
Don’t be shy to use it as it can be fun for the long expression or command that you have problem to remember / to type .
Here are some examples :
!
alias configure ns no shut
alias exec scavb show call active voice brief
alias exec sdvs show dial-peer voice summary
!
G711ulaw / G711alaw Asymetric choice for fax issues on VG224 configurations
On VG224 , you can choose asymetric G711 codec with the voice service voip command for the fax issues.
voice service voip
!
modem passthrough nse codec g711alaw
!
The modem passthrough commands will determine the G711 mode used for outbound calls
But the following part of config will determine the codec use for inbound calls :
!
dial-peer voice 15 voip
description <=== avoid PVID 0 in VG224 ==>
answer-address .
modem passthrough nse codec g711ulaw
session target ipv4:<<loopback_address>>
!
So in our case , the incoming calls will considered in g711ulaw and outgoing calls will be treated as g711ulaw
PVID 0
Never forget to use the answer-address or incoming called number to remove the use of the PVID 0.
Especially when you want to negotiate your codec and VAD.