[asterisk-bugs] Wrong signaling of Calling-Party ( caller-id(num) ) on SIP-Trunk

[Paul Permann]

Hello,

I tried to connect two astrisks ( 13.0.2 ) with sip trunking.
When phone a at asterisk-a called phone b at asterisk-b , phone b showed 
the name of "fromuser"
instead of phone number of phone a or the call doesn't go through.
I just thought it mayd be possible to get the correct Calling Party to 
the display ( ec. E164 ) of phone b for call back, but it is not easy.
In my simply example it should be the access code of the sip trunk (80) 
followed by the phone number of phone a (43) ( = 8043).
The roule to modify the calling party should by something like 
caller-id(num)=80${caller-id(num)}. But that ist not the problem.

phone a ( 42 ) --- asterisk-a ( 81 ) --- sip-trunk --- ( 80 ) asterisk-b 
--- ( 43 ) phone b

In my example 42 ( registered to asterisk-a ) called 8143.

My configuration when caller-id(num) has wrong content but Digest 
Authentication went well, phone b rung.

from sip.conf:

- Asterisk-A:

[Asterisk-b]            ;       Trunk to Asterisk-B
host=192.0.2.31
.
fromuser=*asterisk-B*
username=Asterisk-a

- Asterisk-B:

[Asterisk-a]
host=192.0.2.30
fromuser=asterisk-A
username=Asterisk-b

- Console Asterisk-B:

"Caller-ID(num) : *asterisk-B*") in new stack
"Caller-ID(name): Tel. 42") in new stack

SIP trace ( tshark on Asterisk-B ):

INVITE sip:43 at 192.0.2.31:5060 SIP/2.0
Via: SIP/2.0/UDP 192.0.2.30:5060;branch=z9hG4bK2f083335
Contact: <sip:asterisk-B at 192.0.2.30:5060>

SIP/2.0 401 Unauthorized

INVITE sip:43 at 192.0.2.31:5060 SIP/2.0
From: "Tel. 42" <sip:asterisk-B at 192.0.2.30>;tag=as79667d97
Authorization: Digest username="Asterisk-a", realm="asterisk-b", 
algorithm=MD5, uri="sip:43 at 192.0.2.31:5060", nonce="1f136267", 
response="8a263a2c955b3e870e2b9e7e2374b38c"



My configuration when call doesn't go through, Digest Authentication 
does not fit:

from sip.conf:

- Asterisk-A:

[Asterisk-b]
host=192.0.2.31
.
; fromuser=asterisk-B
username=*Asterisk-a*

- Asterisk-B:

[Asterisk-a]
host=192.0.2.30
.
fromuser=asterisk-A
username=Asterisk-b

- Console Asterisk-B:

username mismatch, have <*42*>, digest has <*Asterisk-a*>
Failed to authenticate device "Tel. 42" <sip:42 at 192.0.2.30>;

SIP trace ( tshark on Asterisk-B ):

INVITE sip:43 at 192.0.2.31:5060 SIP/2.0
Via: SIP/2.0/UDP 192.0.2.30:5060;branch=z9hG4bK31bb05ad
Contact: <sip:42 at 192.0.2.30:5060>

SIP/2.0 401 Unauthorized

INVITE sip:43 at 192.0.2.31:5060 SIP/2.0
From: "Tel. 42" <sip:42 at 192.0.2.30>;tag=as3a5bded9
Authorization: Digest username="*Asterisk-a*", realm="asterisk-b", 
algorithm=MD5, uri="sip:43 at 192.0.2.31:5060", nonce="7e6fd65f", 
response="484fc7fde1937a955f65ddce751c374c"


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