[asterisk-users] What do these SIP errors mean?

[Ira]

This showed up in my log today and I have no idea what it means. I'm 
running 10.0.0-beta1 though I've had issues like this on and off for a while.

No idea if it's a problem with my machine, network or if it's a 
problem with Asterisk.  It does seem like when the errors show up we 
that have problems with dropped calls or lost audio.

Thanks so much for any ideas you might have.

Ira

-- SIP/103-0000002f is ringing
[2011-09-02 15:21:31] WARNING[6155]: chan_sip.c:3384 __sip_xmit: 
sip_xmit of 0xb7430988 (len 880) to (null) returned -1: Invalid argument
-- SIP/101-0000002d is ringing
-- SIP/105-00000031 is ringing
-- SIP/106-00000032 is ringing
[2011-09-02 15:21:32] WARNING[6155]: chan_sip.c:3384 __sip_xmit: 
sip_xmit of 0xb7430988 (len 880) to (null) returned -1: Invalid argument
[2011-09-02 15:21:34] WARNING[6155]: chan_sip.c:3384 __sip_xmit: 
sip_xmit of 0xb7430988 (len 880) to (null) returned -1: Invalid argument
[2011-09-02 15:21:38] WARNING[6155]: chan_sip.c:3384 __sip_xmit: 
sip_xmit of 0xb7430988 (len 880) to (null) returned -1: Invalid argument
-- SIP/103546579768__xErT-0000002f answered DAHDI/2-1
== Extension Changed 103[internal111] new state InUse for Notify User 101
== Extension Changed 103[internal111] new state InUse for Notify User 102
== Extension Changed 105[internal111] new state Idle for Notify User 101
== Extension Changed 105[internal111] new state Idle for Notify User 103
== Extension Changed 105[internal111] new state Idle for Notify User 102
== Extension Changed 102[internal111] new state Idle for Notify User 101
== Extension Changed 102[internal111] new state Idle for Notify User 103
== Extension Changed 101[internal111] new state InUse for Notify User 103
== Extension Changed 101[internal111] new state InUse for Notify User 102
[2011-09-02 15:21:46] WARNING[6155]: chan_sip.c:3384 __sip_xmit: 
sip_xmit of 0xb7430988 (len 880) to (null) returned -1: Invalid argument
[2011-09-02 15:22:02] WARNING[6155]: chan_sip.c:3384 __sip_xmit: 
sip_xmit of 0xb7430988 (len 880) to (null) returned -1: Invalid argument
[2011-09-02 15:22:03] WARNING[6155]: chan_sip.c:3655 retrans_pkt: 
Retransmission timeout reached on transmission 
713ec70d3e5b21ce3aeac75e1ee7e84a at 72.11.22.123:5060 for seqno 102 
(Critical Request) -- See 
https://wiki.asterisk.org/wiki/display/AST/SIP+Retransmissions
Packet timed out after 32000ms with no response
== Spawn extension (dial-fish, s, 6) exited non-zero on 'SIP/101'