[SIPForum-discussion] Problem: Asterisk is ignoring INVITE Messages

Fri Apr 25 10:29:47 UTC 2008

Hi!

We are experementing with SIP and Asterisk in school.
We had no big problems so far, but now we have a problem with sending an INVITE-Message to another host, because Asterisk ignores them.
And we cannot figure out where this failure comes from.

So, please help us to get this thing done.

Here is the SIP debug:

The Registration-Part is function successfully for the users 2000 and 2001.

INVITE-Part:

<--- SIP read from 192.168.100.50:5070 --->
INVITE sip:2000 at 192.168.100.32 SIP/2.0
Via: SIP/2.0/UDP 192.168.100.50:5070;branch=z9hG4bK-eE6hF;rport=
From: <sip:2001 at 192.168.100.32>
To: <sip:2000 at 192.168.100.32>
Call-ID: eE6h at 192.168.100.32
CSeq: 3 INVITE
Contact: <sip:2001 at 192.168.100.50>
User-Agent: TwinSIP Communicator
Content-Type: application/sdp
Content-Length: 99

v=0
o=andy 2634 2634 IN IP4 192.168.100.50
s=test von alex
t=0 0
m=audio 9050 udp PCM/32000/8/1

<------------->
--- (10 headers 5 lines) ---
Sending to 192.168.100.50 : 5070 (no NAT)
Using INVITE request as basis request - eE6h at 192.168.100.32

<--- Reliably Transmitting (no NAT) to 192.168.100.50:5070 --->
SIP/2.0 407 Proxy Authentication Required
Via: SIP/2.0/UDP 192.168.100.50:5070;branch=z9hG4bK-eE6hF;rport=;received=192.168.100.50
From: <sip:2001 at 192.168.100.32>
To: <sip:2000 at 192.168.100.32>;tag=as3887b859
Call-ID: eE6h at 192.168.100.32
CSeq: 3 INVITE
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Supported: replaces
Proxy-Authenticate: Digest algorithm=MD5, realm="asterisk", nonce="4e5f93f7"
Content-Length: 0

<------------>
Scheduling destruction of SIP dialog 'eE6h at 192.168.100.32' in 32000 ms (Method: INVITE)
Found user '2001'

<--- SIP read from 192.168.100.50:5070 --->
INVITE sip:2000 at 192.168.100.32 SIP/2.0
Via: SIP/2.0/UDP 192.168.100.50:5070;branch=z9hG4bK-eE6hF;rport=
From: <sip:2001 at 192.168.100.32>
To: <sip:2000 at 192.168.100.32>;tag=as3887b859
Call-ID: eE6h at 192.168.100.32
CSeq: 3 INVITE
Contact: <sip:2001 at 192.168.100.50>
User-Agent: TwinSIP Communicator
Content-Type: application/sdp
Content-Length: 99
Proxy-Authorization: Digest username="2001", realm="asterisk", nonce="4e5f93f7", uri="192.168.100.32", response="39abd8d49d07c1cbb489b0fc467d2856", algorithm=MD5

<------------->
--- (11 headers 0 lines) ---
Ignoring this INVITE request
Retransmitting #1 (no NAT) to 192.168.100.50:5070:
SIP/2.0 407 Proxy Authentication Required
Via: SIP/2.0/UDP 192.168.100.50:5070;branch=z9hG4bK-eE6hF;rport=;received=192.168.100.50
From: <sip:2001 at 192.168.100.32>
To: <sip:2000 at 192.168.100.32>;tag=as3887b859
Call-ID: eE6h at 192.168.100.32
CSeq: 3 INVITE
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Supported: replaces
Proxy-Authenticate: Digest algorithm=MD5, realm="asterisk", nonce="4e5f93f7"
Content-Length: 0

---

<--- SIP read from 192.168.100.50:5070 --->
INVITE sip:2000 at 192.168.100.32 SIP/2.0
Via: SIP/2.0/UDP 192.168.100.50:5070;branch=z9hG4bK-eE6hF;rport=
From: <sip:2001 at 192.168.100.32>
To: <sip:2000 at 192.168.100.32>;tag=as3887b859
Call-ID: eE6h at 192.168.100.32
CSeq: 3 INVITE
Contact: <sip:2001 at 192.168.100.50>
User-Agent: TwinSIP Communicator
Content-Type: application/sdp
Content-Length: 99
Proxy-Authorization: Digest username="2001", realm="asterisk", nonce="4e5f93f7", uri="192.168.100.32", response="39abd8d49d07c1cbb489b0fc467d2856", algorithm=MD5

<------------->
--- (11 headers 0 lines) ---
Ignoring this INVITE request
Retransmitting #2 (no NAT) to 192.168.100.50:5070:
SIP/2.0 407 Proxy Authentication Required
Via: SIP/2.0/UDP 192.168.100.50:5070;branch=z9hG4bK-eE6hF;rport=;received=192.168.100.50
From: <sip:2001 at 192.168.100.32>
To: <sip:2000 at 192.168.100.32>;tag=as3887b859
Call-ID: eE6h at 192.168.100.32
CSeq: 3 INVITE
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Supported: replaces
Proxy-Authenticate: Digest algorithm=MD5, realm="asterisk", nonce="4e5f93f7"
Content-Length: 0

---

<--- SIP read from 192.168.100.50:5070 --->
INVITE sip:2000 at 192.168.100.32 SIP/2.0
Via: SIP/2.0/UDP 192.168.100.50:5070;branch=z9hG4bK-eE6hF;rport=
From: <sip:2001 at 192.168.100.32>
To: <sip:2000 at 192.168.100.32>;tag=as3887b859
Call-ID: eE6h at 192.168.100.32
CSeq: 3 INVITE
Contact: <sip:2001 at 192.168.100.50>
User-Agent: TwinSIP Communicator
Content-Type: application/sdp
Content-Length: 99
Proxy-Authorization: Digest username="2001", realm="asterisk", nonce="4e5f93f7", uri="192.168.100.32", response="39abd8d49d07c1cbb489b0fc467d2856", algorithm=MD5

<------------->
--- (11 headers 0 lines) ---
Ignoring this INVITE request
Retransmitting #3 (no NAT) to 192.168.100.50:5070:
SIP/2.0 407 Proxy Authentication Required
Via: SIP/2.0/UDP 192.168.100.50:5070;branch=z9hG4bK-eE6hF;rport=;received=192.168.100.50
From: <sip:2001 at 192.168.100.32>
To: <sip:2000 at 192.168.100.32>;tag=as3887b859
Call-ID: eE6h at 192.168.100.32
CSeq: 3 INVITE
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Supported: replaces
Proxy-Authenticate: Digest algorithm=MD5, realm="asterisk", nonce="4e5f93f7"
Content-Length: 0

---

<--- SIP read from 192.168.100.50:5070 --->
INVITE sip:2000 at 192.168.100.32 SIP/2.0
Via: SIP/2.0/UDP 192.168.100.50:5070;branch=z9hG4bK-eE6hF;rport=
From: <sip:2001 at 192.168.100.32>
To: <sip:2000 at 192.168.100.32>;tag=as3887b859
Call-ID: eE6h at 192.168.100.32
CSeq: 3 INVITE
Contact: <sip:2001 at 192.168.100.50>
User-Agent: TwinSIP Communicator
Content-Type: application/sdp
Content-Length: 99
Proxy-Authorization: Digest username="2001", realm="asterisk", nonce="4e5f93f7", uri="192.168.100.32", response="39abd8d49d07c1cbb489b0fc467d2856", algorithm=MD5

<------------->
--- (11 headers 0 lines) ---
Ignoring this INVITE request
Retransmitting #4 (no NAT) to 192.168.100.50:5070:
SIP/2.0 407 Proxy Authentication Required
Via: SIP/2.0/UDP 192.168.100.50:5070;branch=z9hG4bK-eE6hF;rport=;received=192.168.100.50
From: <sip:2001 at 192.168.100.32>
To: <sip:2000 at 192.168.100.32>;tag=as3887b859
Call-ID: eE6h at 192.168.100.32
CSeq: 3 INVITE
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Supported: replaces
Proxy-Authenticate: Digest algorithm=MD5, realm="asterisk", nonce="4e5f93f7"
Content-Length: 0

---

<--- SIP read from 192.168.100.50:5070 --->
INVITE sip:2000 at 192.168.100.32 SIP/2.0
Via: SIP/2.0/UDP 192.168.100.50:5070;branch=z9hG4bK-eE6hF;rport=
From: <sip:2001 at 192.168.100.32>
To: <sip:2000 at 192.168.100.32>;tag=as3887b859
Call-ID: eE6h at 192.168.100.32
CSeq: 3 INVITE
Contact: <sip:2001 at 192.168.100.50>
User-Agent: TwinSIP Communicator
Content-Type: application/sdp
Content-Length: 99
Proxy-Authorization: Digest username="2001", realm="asterisk", nonce="4e5f93f7", uri="192.168.100.32", response="39abd8d49d07c1cbb489b0fc467d2856", algorithm=MD5

<------------->
--- (11 headers 0 lines) ---
Ignoring this INVITE request
Retransmitting #5 (no NAT) to 192.168.100.50:5070:
SIP/2.0 407 Proxy Authentication Required
Via: SIP/2.0/UDP 192.168.100.50:5070;branch=z9hG4bK-eE6hF;rport=;received=192.168.100.50
From: <sip:2001 at 192.168.100.32>
To: <sip:2000 at 192.168.100.32>;tag=as3887b859
Call-ID: eE6h at 192.168.100.32
CSeq: 3 INVITE
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Supported: replaces
Proxy-Authenticate: Digest algorithm=MD5, realm="asterisk", nonce="4e5f93f7"
Content-Length: 0

---

<--- SIP read from 192.168.100.50:5070 --->
INVITE sip:2000 at 192.168.100.32 SIP/2.0
Via: SIP/2.0/UDP 192.168.100.50:5070;branch=z9hG4bK-eE6hF;rport=
From: <sip:2001 at 192.168.100.32>
To: <sip:2000 at 192.168.100.32>;tag=as3887b859
Call-ID: eE6h at 192.168.100.32
CSeq: 3 INVITE
Contact: <sip:2001 at 192.168.100.50>
User-Agent: TwinSIP Communicator
Content-Type: application/sdp
Content-Length: 99
Proxy-Authorization: Digest username="2001", realm="asterisk", nonce="4e5f93f7", uri="192.168.100.32", response="39abd8d49d07c1cbb489b0fc467d2856", algorithm=MD5

<------------->
--- (11 headers 0 lines) ---
Ignoring this INVITE request
Retransmitting #6 (no NAT) to 192.168.100.50:5070:
SIP/2.0 407 Proxy Authentication Required
Via: SIP/2.0/UDP 192.168.100.50:5070;branch=z9hG4bK-eE6hF;rport=;received=192.168.100.50
From: <sip:2001 at 192.168.100.32>
To: <sip:2000 at 192.168.100.32>;tag=as3887b859
Call-ID: eE6h at 192.168.100.32
CSeq: 3 INVITE
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Supported: replaces
Proxy-Authenticate: Digest algorithm=MD5, realm="asterisk", nonce="4e5f93f7"
Content-Length: 0

---

<--- SIP read from 192.168.100.50:5070 --->
INVITE sip:2000 at 192.168.100.32 SIP/2.0
Via: SIP/2.0/UDP 192.168.100.50:5070;branch=z9hG4bK-eE6hF;rport=
From: <sip:2001 at 192.168.100.32>
To: <sip:2000 at 192.168.100.32>;tag=as3887b859
Call-ID: eE6h at 192.168.100.32
CSeq: 3 INVITE
Contact: <sip:2001 at 192.168.100.50>
User-Agent: TwinSIP Communicator
Content-Type: application/sdp
Content-Length: 99
Proxy-Authorization: Digest username="2001", realm="asterisk", nonce="4e5f93f7", uri="192.168.100.32", response="39abd8d49d07c1cbb489b0fc467d2856", algorithm=MD5

<------------->
--- (11 headers 0 lines) ---
Ignoring this INVITE request
[Apr 24 17:31:57] WARNING[5391]: chan_sip.c:1939 retrans_pkt: Maximum retries exceeded on transmission eE6h at 192.168.100.32 for seqno 3 (Non-critical Response)
Really destroying SIP dialog 'eE6h at 192.168.100.32' Method: INVITE

End of INVITE-Part.

Is anything wrong with the SIP-Messages? Or what can we do to solve this problem?

Thanks in advance,
Alex