[asterisk-users] Wanted: tutorial on troubleshooting SIP issues
philipp_subx at redfish-solutions.com
Thu Nov 8 18:11:11 CST 2007
For someone that's network-aware, but hasn't sat down and plowed through
umpteen SIP-related RFC's and memorized the standards, is there a good
primer on troubleshooting SIP issues?
I'm seeing a lot of NOTIFY/603 messages on my network between Asterisk
and my Sipura 942's, for instance...
Not sure what these are... perhaps the qualify keepalives? In which
case, I guess the 603 is moot... but since the messages are originating
from the Sipuras to Asterisk and not vice-versa, it wouldn't seem to be
the "qualify"... Next guess would be that they're NAT keepalives, but
Asterisk and the phones are on the same private subnet (which in turn
Anyway, pointers for someone wanting to learn to quickly diagnose SIP
conversations would be great.
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