05-04-2009 07:26 AM - edited 03-17-2019 09:43 PM
Hello,
outbound calls to the SIP provider work fine but inbound calls fail after the call is picked up. The receiver of the call sends a RTP stream, and the pstn side only hears ringing then fast busy.
Could this be a code negation problem or a fast start early offer problem?
call flow is PSTN->sbc(SIP)->CUBE->CUCM6.1(h323)->SCCP
here is the config
hostname CUBE_3745
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
clock timezone sask -6
no network-clock-participate aim 0
voice-card 5
dspfarm
!
!
!
voice service voip
allow-connections h323 to h323
allow-connections h323 to sip
allow-connections sip to h323
allow-connections sip to sip
h323
emptycapability
no h225 h245-address facility
h225 id-passthru
h245 passthru tcsnonstd-passthru
sip
!
!
!
voice class codec 1
codec preference 1 g711ulaw
!
!
!
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
interface FastEthernet0/0
ip address 10.133.2.248 255.255.255.0
duplex auto
speed 100
h323-gateway voip bind srcaddr 10.133.2.248
!
interface FastEthernet0/1
no ip address
duplex auto
speed auto
!
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 10.133.2.254
!
no ip http server
!
!
!
!
control-plane
!
!
!
voice-port 1/1/0
!
voice-port 1/1/1
!
!
!
sccp local FastEthernet0/0
sccp ccm 10.133.2.62 identifier 12 version 4.1
sccp ccm 10.133.2.61 identifier 11 version 4.1
sccp ccm 10.133.2.60 identifier 10 version 4.1
sccp
!
sccp ccm group 10
bind interface FastEthernet0/0
associate ccm 10 priority 1
associate profile 10 register cube_mtp
!
dspfarm profile 10 mtp
codec g711ulaw
maximum sessions software 250
associate application SCCP
!
!
dial-peer voice 100 voip
shutdown
destination-pattern .T
session target ras
dtmf-relay h245-alphanumeric
codec transparent
ip qos dscp cs5 media
ip qos dscp cs5 signaling
!
dial-peer voice 200 voip
destination-pattern 51..
session target ipv4:10.133.2.60
dtmf-relay h245-alphanumeric
codec transparent
ip qos dscp cs5 media
ip qos dscp cs5 signaling
!
dial-peer voice 201 voip
destination-pattern 53..
session target ipv4:10.133.2.60
dtmf-relay h245-alphanumeric
codec g711ulaw
ip qos dscp cs5 media
ip qos dscp cs5 signaling
!
dial-peer voice 101 voip
destination-pattern 980....
session protocol sipv2
session target ipv4:172.21.142.87
dtmf-relay rtp-nte digit-drop
codec transparent
ip qos dscp cs5 media
ip qos dscp cs5 signaling
!
dial-peer voice 103 voip
session protocol sipv2
incoming called-number .
dtmf-relay rtp-nte digit-drop
codec g711ulaw
ip qos dscp cs5 media
ip qos dscp cs5 signaling
!
05-04-2009 09:16 AM
If your inbound and outbound dial peer both don't have codec transparent that may cause problems. Try putting codec transparent on the outgoing and incoming dial peer.
Otherwise it may be something else region-related in CUCM, but it sounds like codec problems.
hth,
nick
05-04-2009 12:12 PM
I changed the config to force g711u and no differnce.
the called phone rings and starts a RTP stream to the CUBE but the calling set just rings 3 time and then goes busy. If this was a region or CAC problem the phones would never ring.
I'm leaning towards a Fast-start early offer problem.
My Cube sends a error 500 internal server error to SBC and there are debug errors of no SDP message body found in Body.
Trent
05-04-2009 02:58 PM
Hi Trent,
If the ringback is generated locally and the user picks up after 3 rings, then it can still be a codec issue.
(Sort of like when you call a voicemail system from a G729 region and there's no transcoder. The IP phone will ring, but will disconnect on the CFNA timer)
You would need to post more details to make any sense of the 500 error.
-nick
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