04-13-2018 12:38 AM - edited 03-17-2019 12:37 PM
Dears ,
CUCM (11.5) ====H323 GW (router 4331with no PVDM ) FXO card with it's own resources ===PSTN
when we make outbound call for example dial my cell Phone ,it is ringing but after 10s call terminated ,
also if i answered the call ,it disconnected after this period 10s.
the configured dial peer between gateway and CUCM is used default Codec g729. The region between IP phone and Gateway use codec g729 . So the codec of call is g729.
Also w try to force call to use g711 but same issue
No transcoder is configured on this GW ,we don't have PVDM. also in this scenario we don't need it as FXO modem use it's resources to decode medial . and calls between IP phone and GW will be g729 or g711 .
This Cause code (47) indicates that no resources found ,We need to clarify this issue as we have the same scenario on another site and calls succeed .
Kindly find attached output of these debugs during this issue
debug voip ccapi inout
debug h225 asn1
debug h245 asn1
debug cch323 all
debug ip tcp transaction
Solved! Go to Solution.
04-13-2018 06:11 AM
04-13-2018 06:11 AM
04-13-2018 06:37 AM - edited 04-15-2018 02:27 PM
Hello Nipun ,
kindly find attached current config of H323 section ,please note that it's fresh install not worked before .
Thanks
04-13-2018 12:12 PM - edited 04-15-2018 02:30 PM
As per below logs , TCP connection established but CAP negotiation not happened .
Please note that there's FW between GW and CUCM ,May this cause this issue ???
Apr 12 19:00:45.734 UTC: TCB7FD34E66F980 created
Apr 12 19:00:45.734 UTC: TCP0: state was LISTEN -> SYNRCVD [1720 -> X.X.X.X(49778)]
Apr 12 19:00:45.734 UTC: TCP: tcb 7FD34E66F980 connection to X.X.X.X:49778, peer MSS 1360, MSS is 516
Apr 12 19:00:45.734 UTC: TCP: Selective ack is disabled from the CLI
Apr 12 19:00:45.734 UTC: TCP: sending SYN, seq 4067474583, ack 3681303653
Apr 12 19:00:45.734 UTC: TCP0: Connection to X.X.X.X:49778, advertising MSS 536
Apr 12 19:00:45.737 UTC: TCP0: state was SYNRCVD -> ESTAB [1720 -> X.X.X.X(49778)]
Apr 12 19:00:45.737 UTC: //-1/xxxxxxxxxxxx/H323/cch323_ct_main: SOCK 0 Event 0x1
Apr 12 19:00:45.737 UTC: TCB7FD33C7FBA58 accepting 7FD34E66F980 from X.X.X.X.49778
04-13-2018 12:43 PM - edited 04-13-2018 12:44 PM
With H.323 there will be two TCP handshakes and both will remain active for the duration of the call.
This one is for destination port 1720 from CUCM sourcing using an ephemeral port 49778. After this you would see H.225 messages being exchanged.
What FW do you have ? Is it doing H.323 inspection ?
04-13-2018 01:45 PM
Hello
I noticed that GW negotiates h245 with port 22007 but this out of ephemeral range (32768-65535).
So why the h.323 gw negotiates the h245 info with out of range ports ?
h245Address ipAddress :
{
ip '0A067D81'H
port 22007
}
callIdentifier
Unfortunately , i don't have info about FW but i think TCP ephemeral ports have been opened .
04-13-2018 03:00 PM
04-13-2018 03:26 PM
As per this cisco docs ,The ephemeral port range for the system (CUCM11.5) is 32768 to 61000
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/11_5_1/sysConfig/CUCM_BK_SE5DAF88_00_cucm-system-configuration-guide-1151/CUCM_BK_SE5DAF88_00_cucm-system-configuration-guide-1151_chapter_01010100.pdf
But after review again ,i found this note ((For IOS gateways,the H.245 port range is from 11000 to 65535)) from CUCM to Gateway and Vice versa .
So what about the range you posted
Cisco Call Manger : from 1024 to 65535
Do you mean that the required ports for connection from CUCM to GW are (11000 to 65535 ) and ports for connection from GW to CUCM are (1024 to 65535) ???
Please confirm .
Thanks
04-14-2018 04:27 AM
04-15-2018 01:41 PM
Hello Nipun Singh Raghav
The issue has been fixed after we permit these range (11000 - 65535 ) between CUCM and GW.
But now we need to convert GW from H323 to SIP gateway ,what is port range will be required between CUCM and SIP gateway ?
Thanks
04-16-2018 04:15 AM
04-17-2018 06:20 AM - edited 04-17-2018 06:21 AM
04-19-2018 05:24 AM
04-20-2018 02:55 AM
WE GET THIS ISSUE FIXED
Hi
the issue was , CUCM reject anonymous calls as per debug ,SIP Header From info is (<sip:9[2-9].......@X.X.X.X.:5060>Expires: 3600) so modify these by below config on sip GW and disable regect anonymous calls on Phones line .
we faced these issue only with incoming call through fxo line which not provide caller number from Teleco .
voice class sip-profiles 1
request INVITE sip-header From modify "<sip:9*@" "<sip:0000000000@"
!
dial-peer voice 1 voip
voice-class sip profiles 1
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