asterisk users - Oct 2003 - SIP Problems with Cisco 5300 - Invalid CSeq Number

People:

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noc2pbx*CLI>
    -- Executing Goto("SIP/-081363a0", "ivr1|2000|1") in new
stack
    -- Goto (ivr1,2000,1)
    -- Executing Answer("SIP/-081363a0", "") in new stack
    -- Executing Wait("SIP/-081363a0", "1") in new stack
    -- Executing BackGround("SIP/-081363a0", "menu1") in new
stack
    -- Playing 'menu1'
  == CDR updated on SIP/-081363a0
    -- Executing Goto("SIP/-081363a0", "ivr2|2000|1") in new
stack
    -- Goto (ivr2,2000,1)
    -- Executing BackGround("SIP/-081363a0", "ivr2") in new
stack
    -- Playing 'ivr2'
  == CDR updated on SIP/-081363a0
    -- Executing Dial("SIP/-081363a0",
"SIP/99952880479@172.16.254.99") in new stack
    -- Called 99952880479@172.16.254.99
    -- SIP/172.16.254.99-506c is ringing
    -- SIP/172.16.254.99-506c answered SIP/-081363a0
    -- Attempting native bridge of SIP/-081363a0 and SIP/172.16.254.99-506c
    -- Got SIP response 481 "Invalid CSeq Number" back from
172.16.254.99
  == Spawn extension (ivr2, 1, 1) exited non-zero on 'SIP/-081363a0'
    -- Got SIP response 481 "Invalid CSeq Number" back from
172.16.254.99
    -- Got SIP response 481 "Invalid CSeq Number" back from
172.16.254.99
noc2pbx*CLI>

The Dial line is:

exten => 2383,1,Dial,SIP/99952880479@172.16.254.99

This issue only happens when the incoming and outgoing calls are routed thru the
same gw. If the incoming call is generated with ATA o Softphone in SIP mode, all
works great.


What can I check?

Thanks in advance,


Gus



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