Send to VRU Node fails

[Mohamed Yare]

can Any one help me with this issue that the Send to VRU is failing the call.

I am receiving an error: Sorry We are currently experience system problem:

I can see this error in the CVP server logs:

can't connect to SIP server: ConnectionWrapper.check: can't establish connection

[Chintan Gajjar]

Is 142.100.64.1 is VXML gateway?

Can you ping VXML gateway from your CVP?

Can you connect to port 5060 on VXML gateway from your CVP?

is you VXML gateway setup?

Can you post VXML gateway configuration if all above is okay. 

[Mohamed Yare]

Thank you for your quick replay Chintan.

PSTN-->Ingress GW/VXML GW--->CVPServer--->ICM

Dial 4082022233 from PSTN, translated to 3100 in gateway and send to CVP server.

Ingress and VXML Gateway have been configured.

I can ping where gateway to CVP server:

CVP_GW#ping 142.100.64.19
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 142.100.64.19, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms

[Chintan Gajjar]

Can you ping the VXML Gateway with ip 142.100.64.1 from CVP and can you telnet on port 5060 from CVP to VXML gateway: 142.100.64.1?

[Mohamed Yare]

I can ping  to the VXML gateway (142.100.64.1) from the CVP server.

I can not telnet from CVP server to VXML gateway

telnet 142.100.64.1 5060== Could not open connection to the host on port 5060

[Chintan Gajjar]

yes that could be the problem, mostly and by default CVP uses TCP as a transport for the outbound SIP invites.

check with network team on whats blocking the communication, try to temporary disable the firewall if enabled on CVP to see if its causing the issue.

[Mohamed Yare]

Still facing same issue:

can't connect to SIP server: ConnectionWrapper.check: can't establish connection

There are not firewall between the gateway and CVP call server. I also disabled Windows firewall on the server:

Label +CorrelationID is not sending to the VXML gateway.

[Sasikumar Divvela]

Not very sure but i usually see communication issues when  any address authentication configured, do you have any client address authentication configured in Vxml gateway . if yes, try to configure  "no ip address trusted authenticate"and check once 

[Mohamed Yare]

voice service voip
no ip address trusted authenticate
allow-connections sip to sip
no supplementary-service sip handle-replaces
signaling forward unconditional
fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback none
sip
bind control source-interface GigabitEthernet0/2.102
bind media source-interface GigabitEthernet0/2.102
rel1xx disable
min-se 360 session-expires 360
header-passing

[Chintan Gajjar]

did you check if you were able to connect to the SIP port 5060 on VXML gateway using telnet after disabling the firewall on CVP?

[Mohamed Yare]

telnet 142.100.64.19 5060
Trying 142.100.64.19, 5060 ... Open

[Mohamed Yare]

SIP/2.0 488 Not Acceptable Here
Via: SIP/2.0/UDP 142.102.64.1:5060;branch=z9hG4bK32100
To: <sip:3100@142.100.64.19>;tag=dsdfce1f87
From: "HQ-PSTN--CVP_10_5_1_0_0_0_189" <sip:5151111@142.102.64.1>;tag=11D35C-1AE8
Call-ID: 5A92C6ED-FF8611E7-8019E851-C40C35BA@142.102.64.1
CSeq: 101 INVITE
Content-Length: 0
Cisco-Guid: 1509488669-4286976487-2147856634-3957141392
Contact: <sip:142.100.64.19:5060;transport=udp>
Cisco-Gucid: 59F8F81DFF8611E78005B0FA

[Chintan Gajjar]

Please enable the debugs(atleast SIP level) on CVP and attached the full CVP logs here, posting just SIP message will not help us here, we will need info on who is sending 488 and why.

To enable the SIP debugs on CVP go to:

http://<CVP HOST or IP>:8000/cvp/diag

from the drop down select com.dynamicsoft.DsLibs.DsUALibs

select ALL and Click SET.

make a test call collect the logs (all covering call timestamp) from c:\Cisco\CVP\Logs\

[Mohamed Yare]

I really appreciate you time and effort Chintan. Thanks

As per your request, please find the attached debug.

[Chintan Gajjar]

are you sure you tried telnet to host 142.100.64.1  (VXML gateway) from CVP host 142.100.64.19 on host 5060?

i see you did telnet to 142.100.64.19 but what about telnet to 142.100.64.1 on port 5060 from 142.100.64.19?