10-23-2007 05:03 AM - edited 03-15-2019 06:58 AM
Hi,
I've a CCM4.3 with several regions ( each regionn with his own h323 gateway ).
Call inside the same region are g.711, calls between different region are g.729.
When arrive a PST call on a region to an IP phone and the phone tranfer the call on another ip-phone IN THE SAME REGION all works fine.
If the call is being tranferred to another REGION does not work ( because the g.729 from different region ).
On the CCM is configured s SW MTP ( the ccm ).
Does I need an IOS MTP or Trancoder ?
Or I've to set the "MTP required" on gateway config ?
I can use c2811 with PVDMII
Any help ?
10-23-2007 12:09 PM
can you post your h323 with dial peer and voice codec class configuration.
I am looking to see if your inbound dial peers that send calls to call manager are set to attempt to use a voice codec class that includes both codecs.
Because in order to transfer from IP Phone to IP Phone no external transcoder is required.
example
voice class codec 1
codec preference 1 g711ulaw
codec preference 2 g729br8
codec preference 3 g729r8
!
dial-peer voice 100 voip
description To Call Manager
voice-class codec 1
session target ipv4:
incoming called-number .
no vad
10-24-2007 12:47 AM
Hi,
here the config of the VG; when i Transfer the call to a ip-phone on another region ( talking with the first in G729 ), the ipphone ring-out, but the call go disconnected when the user on that region pickup the call.
...
...
voice class codec 99
codec preference 1 g711ulaw
codec preference 2 g711alaw
codec preference 4 g729r8
codec preference 5 g729br8
codec preference 6 g723ar53
codec preference 7 g723ar63
codec preference 8 g723r53
codec preference 9 g723r63
codec preference 10 g726r16
codec preference 11 g726r24
codec preference 12 g726r32
codec preference 13 g728
...
...
dial-peer voice 2000 voip
destination-pattern 105385T
progress_ind setup enable 3
voice-class codec 99
voice-class h323 99
session target ipv4:10.168.1.1
dtmf-relay h245-alphanumeric
fax rate disable
ip qos dscp cs5 media
ip qos dscp cs3 signaling
!
dial-peer voice 2001 voip
destination-pattern 105385T
progress_ind setup enable 3
voice-class codec 99
session target ipv4:10.168.1.2
dtmf-relay h245-alphanumeric
fax rate disable
ip qos dscp cs5 media
ip qos dscp cs3 signaling
10-24-2007 03:22 AM
Hi,
I've solved the issue using a 2801 with PVDMII64, and configuring transcoding ( see bottom for the config ).
Then I've added to the callmanager as transcoder Cisco IOS Enhanced Media Termination Point.
The only issue is that i see also a lot og G711u transcoding and not only G729.
I already had MTP sotware ( the ccm ), but it seem it does not trancode in G729.
Any suggest ?
regards
Luigi
=====
sccp local FastEthernet0/0
sccp ccm 10.168.1.1 identifier 1 version 4.0
sccp ccm 10.168.1.2 identifier 2 version 4.0
sccp ip precedence 3
sccp
!
sccp ccm group 999
bind interface FastEthernet0/0
associate ccm 1 priority 1
associate ccm 2 priority 2
associate profile 10 register MTP-ios203
keepalive retries 5
switchover method immediate
switchback method immediate
switchback interval 15
!
dspfarm profile 10 transcode
codec g729ar8
codec g729abr8
codec g711ulaw
maximum sessions 24
associate application SCCP
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