[asterisk-users] Asterisk 1.6.2.20 lost registration bug with NAT keep-alive

[Carlos Alvarez]

We recently installed this update, and found that half our customers would
lose registration after about a minute.  Packet capture shows that the
phone sends the keep-alive packet (a SIP options packet), gets back a
SIP 481 no subscription, then immediately loses registration.  Turning off
keep-alive fixes the problem.  This is with Cisco/Linksys SPA phones, both
older 9xx series and the newer 303 and 5xx series.


-- 
Carlos Alvarez
TelEvolve
602-889-3003
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