07-04-2012 11:04 AM - edited 03-16-2019 12:01 PM
Hi voice team,
I have a problem with CUCM 5.1, sometimes when I receive an external call, I can not transfer to another extension, I press the Transfer button and nothing happens, but it has moments that I can make the transfer. Does anyone know how to solve this problem?
Best regards,
Thiago Gandara
07-05-2012 09:59 AM
Follow the config:
sccp local FastEthernet0/0
sccp ccm 172.16.8.240 identifier 1 version 3.0
sccp
!
sccp ccm group 1
bind interface FastEthernet0/0
associate ccm 1 priority 1
associate profile 101 register transcode
associate profile 100 register mtp00233335da20
associate profile 99 register conference
!
dspfarm profile 101 transcode
description TRANSCODER
codec g711ulaw
codec g711alaw
codec g729ar8
codec g729abr8
codec g729r8
maximum sessions 4
associate application SCCP
!
dspfarm profile 99 conference
codec g711ulaw
codec g711alaw
codec g729ar8
codec g729abr8
codec g729r8
codec g729br8
maximum sessions 6
associate application SCCP
!
dspfarm profile 100 mtp
codec g711ulaw
maximum sessions software 20
associate application SCCP
Thanks
07-05-2012 10:04 AM
Guys, this is an intermittent issue. I doubt if it is configuration related. I have seen this a few times with supplementary services and an IOS upgrade did the job. Thiago try and upgrade IOS to a much newer one.
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"There is a wideness in God's mercy Like the wideness of the sea.There's a kindness in His justice Which is more than liberty"
07-05-2012 10:07 AM
Guys, the problem would not be in CUCM?
Thanks.
07-05-2012 10:25 AM
If its not happening for every call you are correct that it can be a IOS upgrade that fixes it or that those transcoders are already being used when they try. They can do 4 transcode sessions on that gateway. If you are in a large deployment they can be eating up very fast.
07-05-2012 10:29 AM
Yes, its not happening for every external calls, but the problem would not be in CUCM 5.1?
Thanks.
07-05-2012 01:24 PM
I believe it has nothing to do with IOS upgrade. Its related to config. But he can try this as well.
If the call between phone and GW is g729 then hardware MTP isn't invoked since its using g711 as per the config. In this case XCODER is used which is having max sessions as 6 (assuming that its in the same MRGL).
The tie break will be looking at CUCM traces to see what error is generated which transfer is triggered. I am suspecting "failed to allocate MTP resource".
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