Hello All,
 
When I dial a 4-digit extension I get a fast busy now and in the SIP
traffic this is what happens:

U 172.16.11.8:5060 -> 172.16.11.89:5060
SIP/2.0 500 Internal Server Error.
Via: SIP/2.0/UDP 172.16.11.89;branch=z9hG4bK4caea2f718E7EAB6.
From: "Unassigned"
<sip:[email protected]>;tag=C96205AE-2BC17D61.
To: <sip:[email protected];user=phone>.
Cseq: 2 INVITE.
Call-Id: [email protected].
Server: sipXecs/4.4.0 sipXecs/sipxbridge (Linux).
Content-Length: 0.
Date: Mon, 19 Mar 2012 17:03:05 GMT.
.
 
Full SIP Packets are here:

U 172.16.11.89:5060 -> 172.16.11.8:5060
INVITE sip:[email protected];user=phone SIP/2.0.
Via: SIP/2.0/UDP 172.16.11.89;branch=z9hG4bK1c141258502B5A43.
From: "Unassigned"
<sip:[email protected]>;tag=C96205AE-2BC17D61.
To: <sip:[email protected];user=phone>.
CSeq: 1 INVITE.
Call-ID: [email protected].
Contact: <sip:[email protected]>.
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE,
NOTIFY, PRACK, UPDATE, REFER.
User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.2.5.0508.
Accept-Language: en.
Supported: 100rel,replaces.
Allow-Events: talk,hold,conference.
Max-Forwards: 70.
Content-Type: application/sdp.
Content-Length: 294.
.
v=0.
o=- 1332176582 1332176582 IN IP4 172.16.11.89.
s=Polycom IP Phone.
c=IN IP4 172.16.11.89.
t=0 0.
a=sendrecv.
m=audio 2264 RTP/AVP 9 0 8 18 101.
a=rtpmap:9 G722/8000.
a=rtpmap:0 PCMU/8000.
a=rtpmap:8 PCMA/8000.
a=rtpmap:18 G729/8000.
a=fmtp:18 annexb=no.
a=rtpmap:101 telephone-event/8000.
 
#
U 172.16.11.8:5060 -> 172.16.11.89:5060
SIP/2.0 100 Trying.
From: "Unassigned"
<sip:[email protected]>;tag=C96205AE-2BC17D61.
To: <sip:[email protected];user=phone>.
Call-Id: [email protected].
Cseq: 1 INVITE.
Via: SIP/2.0/UDP 172.16.11.89;branch=z9hG4bK1c141258502B5A43.
Content-Length: 0.
.
 
#
U 172.16.11.8:5060 -> 172.16.11.89:5060
SIP/2.0 407 Proxy Authentication Required.
From: "Unassigned"
<sip:[email protected]>;tag=C96205AE-2BC17D61.
To: <sip:[email protected];user=phone>;tag=9MzFzg.
Call-Id: [email protected].
Cseq: 1 INVITE.
Via: SIP/2.0/UDP 172.16.11.89;branch=z9hG4bK1c141258502B5A43.
Proxy-Authenticate: Digest realm="midcscmph.esgw.org",
nonce="7da644541bcc09c98e970a41854303214f6766c9", qop="auth".
Server: sipXecs/4.4.0 sipXecs/sipXproxy (Linux).
Date: Mon, 19 Mar 2012 17:03:05 GMT.
Content-Length: 0.
.
 
#
U 172.16.11.89:5060 -> 172.16.11.8:5060
ACK sip:[email protected];user=phone SIP/2.0.
Via: SIP/2.0/UDP 172.16.11.89;branch=z9hG4bK1c141258502B5A43.
From: "Unassigned"
<sip:[email protected]>;tag=C96205AE-2BC17D61.
To: <sip:[email protected];user=phone>;tag=9MzFzg.
CSeq: 1 ACK.
Call-ID: [email protected].
Contact: <sip:[email protected]>.
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE,
NOTIFY, PRACK, UPDATE, REFER.
User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.2.5.0508.
Accept-Language: en.
Max-Forwards: 70.
Content-Length: 0.
.
 
#
U 172.16.11.89:5060 -> 172.16.11.8:5060
INVITE sip:[email protected];user=phone SIP/2.0.
Via: SIP/2.0/UDP 172.16.11.89;branch=z9hG4bK4caea2f718E7EAB6.
From: "Unassigned"
<sip:[email protected]>;tag=C96205AE-2BC17D61.
To: <sip:[email protected];user=phone>.
CSeq: 2 INVITE.
Call-ID: [email protected].
Contact: <sip:[email protected]>.
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE,
NOTIFY, PRACK, UPDATE, REFER.
User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.2.5.0508.
Accept-Language: en.
Supported: 100rel,replaces.
Allow-Events: talk,hold,conference.
Proxy-Authorization: Digest username="2311/0004f23b6851",
realm="midcscmph.esgw.org",
nonce="7da644541bcc09c98e970a41854303214f6766c9", qop=auth,
cnonce="7kHj7HCm8V8ujPv", nc=00000001,
uri="sip:[email protected];user=phone",
response="55e21a94bd9466122451276a3a6a69e6", algorithm=MD5.
Max-Forwards: 70.
Content-Type: application/sdp.
Content-Length: 294.
.
v=0.
o=- 1332176582 1332176582 IN IP4 172.16.11.89.
s=Polycom IP Phone.
c=IN IP4 172.16.11.89.
t=0 0.
a=sendrecv.
m=audio 2264 RTP/AVP 9 0 8 18 101.
a=rtpmap:9 G722/8000.
a=rtpmap:0 PCMU/8000.
a=rtpmap:8 PCMA/8000.
a=rtpmap:18 G729/8000.
a=fmtp:18 annexb=no.
a=rtpmap:101 telephone-event/8000.
 
#
U 172.16.11.8:5060 -> 172.16.11.89:5060
SIP/2.0 100 Trying.
From: "Unassigned"
<sip:[email protected]>;tag=C96205AE-2BC17D61.
To: <sip:[email protected];user=phone>.
Call-Id: [email protected].
Cseq: 2 INVITE.
Via: SIP/2.0/UDP 172.16.11.89;branch=z9hG4bK4caea2f718E7EAB6.
Content-Length: 0.
.
 
#
U 172.16.11.8:5060 -> 172.16.11.89:5060
SIP/2.0 500 Internal Server Error.
Via: SIP/2.0/UDP 172.16.11.89;branch=z9hG4bK4caea2f718E7EAB6.
From: "Unassigned"
<sip:[email protected]>;tag=C96205AE-2BC17D61.
To: <sip:[email protected];user=phone>.
Cseq: 2 INVITE.
Call-Id: [email protected].
Server: sipXecs/4.4.0 sipXecs/sipxbridge (Linux).
Content-Length: 0.
Date: Mon, 19 Mar 2012 17:03:05 GMT.
.
 
#
U 172.16.11.89:5060 -> 172.16.11.8:5060
ACK sip:[email protected];user=phone SIP/2.0.
Via: SIP/2.0/UDP 172.16.11.89;branch=z9hG4bK4caea2f718E7EAB6.
From: "Unassigned"
<sip:[email protected]>;tag=C96205AE-2BC17D61.
To: <sip:[email protected];user=phone>.
CSeq: 2 ACK.
Call-ID: [email protected].
Contact: <sip:[email protected]>.
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, INFO, MESSAGE, SUBSCRIBE,
NOTIFY, PRACK, UPDATE, REFER.
User-Agent: PolycomSoundPointIP-SPIP_550-UA/3.2.5.0508.
Accept-Language: en.
Max-Forwards: 70.
Content-Length: 0.
 
 
Aaron Pursell
Network Systems Administration
Easter Seals-Goodwill Northern Rocky Mountain, Inc.
4400 Central Ave
Great Falls, Montana  59405

(406) 771-3721
[email protected]
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