Debugging Call Signaling - Patton electronics SmartNode Series Software Configuration Manual

SmartWare Software Configuration Guide
Mode: Administrator execution
Step
1 unit #ping ipaddress [ number-of-packets ]
[timeout seconds ]
Example: Verify IP connectivity
The following example uses the ping command to test connections to remote hosts 192.195.23.10 and
172.16.40.122. The results show an unsuccssful attempt to contact host 192.195.23.10 (as indicated by the "No
route to host" response) and a successful connection to host 172.16.40.122 (which received and sent packets with
no loss).
SN#ping 192.195.23.1 10 timeout 5
Sending 10 ICMP echo requests to 192.195.23.10, timeout is 5 seconds:
% No route to host
SN#
SN#ping 172.16.40.122
Sending 5 ICMP echo requests to 172.16.40.122, timeout is 1 seconds:
Reply from 172.16.40.122: Time <10ms
Reply from 172.16.40.122: Time <10ms
Reply from 172.16.40.122: Time <10ms
Reply from 172.16.40.122: Time <10ms
Reply from 172.16.40.122: Time <10ms
Ping statistics for 172.16.40.122:
Packets: Sent 5, Received 5, Lost 0 (0% loss),
RTT: Minimum <10ms, Maximum <10ms, Average <10ms

Debugging call signaling

If calls do not connect, or disconnect during the process of connecting, there is a problem in call signaling. We
suggest the following steps to debug call signaling:
1. Work from the call source to the call destination.
2. Make sure that the call enters correctly the context CS of your unit (debug the source signaling protocol,
ISDN, FXS, SIP or H.323, depending on where the call comes from).
3. Make sure that the call leaves correctly the context CS of your unit (debug the destination signaling proto-
col, ISDN, FXS, SIP or H.323, depending on where the call goes to).
4. Debug call routing when the call enters the context CS, but it does not leave it. Remember that context CS
must be activated ("no shutdown") for call routing to work.
Please make yourself familiar with the context CS concept described in chapter 26,
page 293. The following terminology will be used in this chapter:
• Incoming call: Call setup attempt from a call signaling protocol towards the context CS
• Outgoing call: Call setup attempt from the context CS towards a call signaling protocol
Debugging call signaling
Command Purpose
Determines whether an IP host can be contacted.
42 • VoIP debugging
"CS context overview" on
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