20 Feb
2004
20 Feb
'04
5:55 p.m.
Hi all,
My network is like this:
----------------------------
| |
| |
| Private network | ----------- NAT----------Internet ----------------- SER
server
| |
| |
----------------------------
And I use SER+mysql DB.
For a SIP terminal there are only one number and for a number there are only one SIP
terminal. For a call I need to know only one URI. So that I set :
modparam("registrar", "append_branches", 0)
That mean I must get the last register infomation for a SIP terminal because of NAT port
maybe change when SIP terninal reboot(Maby power off and power on so that maybe no
unregister packets sent). So that I set:
modparam("registrar", "desc_time_order", 1)
to get the most current URI.
I don't know what mean with the parm default_q, sometimes I set it as 50, sometimes
use default value 0.
But SER often call to the URI wrong.
Looking my recorder:
I use a SIP terminal named 1001. The terminal register multi times. So I can get many
I get usrloc information by command "serctl ul show" like this:
===Domain list===
---Domain---
name : 'location'
size : 512
table: 0x402e7998
d_ll {
n : 2
first: 0x402e99a0
last : 0x402e9a80
}
...Record(0x402e99a0)...
domain: 'location'
aor : '1001'
~~~Contact(0x402e9b48)~~~
domain : 'location'
aor : '1001'
Contact: 'sip:1001@218.107.145.102:7035'
Expires: 131
q : 0.00
Call-ID: '3BAFC06D5BD54939A3114CABF35D1FE0(a)novsky.com'
CSeq : 11838
replic : 0
State : CS_SYNC
Flags : 1
next : 0x402e9be8
prev : (nil)
~~~/Contact~~~~
~~~Contact(0x402e9be8)~~~
domain : 'location'
aor : '1001'
Contact: 'sip:1001@218.107.145.102:7011'
Expires: 36
q : 0.00
Call-ID: 'D125943999FF4907BCD175EEFE3DE24A(a)novsky.com'
CSeq : 43236
replic : 0
State : CS_SYNC
Flags : 1
next : 0x402e99e0
prev : 0x402e9b48
~~~/Contact~~~~
~~~Contact(0x402e99e0)~~~
domain : 'location'
aor : '1001'
Contact: 'sip:1001@218.107.145.102:7080'
Expires: 1794
q : 0.00
Call-ID: '9658F25C5E3040C1AE4C3405032B7558(a)novsky.com'
CSeq : 63264
replic : 0
State : CS_NEW
Flags : 1
next : (nil)
prev : 0x402e9be8
~~~/Contact~~~~
.../Record...
...Record(0x402e9a80)...
domain: 'location'
aor : '1000'
~~~Contact(0x402e9ac0)~~~
domain : 'location'
aor : '1000'
Contact: 'sip:1000@218.201.88.163:1083'
Expires: 2565
q : 0.00
Call-ID: '3350078894(a)172.16.3.80'
CSeq : 4
replic : 0
State : CS_SYNC
Flags : 1
next : (nil)
prev : (nil)
~~~/Contact~~~~
.../Record...
In the list we can find that last register use NAT port 7080 by check expires time.
I use this terminal -- 1001 to call 1001, It should return 486 BUSY in normal. But it
didn't reponse.
See that packet I get by tethereal:
291.677702 218.107.145.102 -> 218.201.88.164 SIP/SDP Request: INVITE
sip:1001@novsky.com, with session description
291.702534 218.201.88.164 -> 218.107.145.102 SIP Status: 407 Proxy Authentication
Required
291.822811 218.107.145.102 -> 218.201.88.164 SIP Request: ACK sip:1001@novsky.com
291.824597 218.107.145.102 -> 218.201.88.164 SIP/SDP Request: INVITE
sip:1001@novsky.com, with session description
291.868197 218.201.88.164 -> 218.107.145.102 SIP Status: 100 trying -- your call is
important to us
291.870300 218.201.88.164 -> 218.107.145.102 SIP/SDP Request: INVITE
sip:1001@218.107.145.102:7035, with session description
292.045669 218.201.88.164 -> 218.107.145.102 SIP/SDP Request: INVITE
sip:1001@218.107.145.102:7035, with session description
294.065633 218.201.88.164 -> 218.107.145.102 SIP/SDP Request: INVITE
sip:1001@218.107.145.102:7035, with session description
298.105648 218.201.88.164 -> 218.107.145.102 SIP/SDP Request: INVITE
sip:1001@218.107.145.102:7035, with session description
I find SER get the wrong URI and send to NAT port 7035.
It sometimes happens but not always.
How to deal with that.
Br,
Wangji