[Asterisk-Users] CallerID for incoming SIP calls to Asterisk connected phone

[Alvin Austin]

Hello all,

I'm having a problem with getting incoming callerid to a lan-connected 
phone.

The Asterisk server is connected to the Internet, and a Grandstream 
BT101 phone on a lan interface:
INTERNET ----(eth0) Asterisk (eth1) ---- Grandstream (192.168.1.51)
The phone registers with the Asterisk server as ext 20.

I can initiate and receive calls from the Grandstream phone fine.

The Asterisk server has a sipphone.com registered account.  When a SIP 
call comes in from outside, the call completes fine, but the phone 
always shows the telephone number of my Asterisk server, not the calling 
party's SIP number.  What's wrong?

What I really want is that for inbound calls, I see the callerid of the 
SIP phone initiating the call.

Here are the (hopefully) relevant parts in the config files...

In sip.conf:
-----------
register => 1747xxxxxxx:mypassword at proxy01.sipphone.com/1747xxxxxxx

[sipphone]
context=from-sip-external
type=friend
secret=sip_password
username=1747xxxxxxx
;host=proxy01.sipphone.com
host=198.65.166.131
callerid="My Name <1747xxxxxxx>:
qualify=no
reinvite=no
canreinvite=no
insecure=very

[20]
context=from-sip-internal
type=friend
callerid=20
username=20
mailbox=20
secret=xxxx
host=dynamic
defaultip=192.168.1.51
canreinvite=no
dtmf=info
dtmfmode=rfc2833
;
disallow=all
allow=ulaw
allow=alaw
allow=ilbc


In extensions.conf:
------------------

[globals]
TRUNK=Zap/1  ; FXO interface
SIPPHONEUSERID=1747xxxxxxx

[from-sip-external]
exten => ${SIPPHONEUSERID},1,SetCIDName(SIP - ${CALLERIDNAME})
exten => ${SIPPHONEUSERID},2,Dial(SIP/20,15)
exten => ${SIPPHONEUSERID},3,Goto(mainmenu,s,1)
exten => ${SIPPHONEUSERID},4,Hangup
...

Any suggestions/help would be greatly appreciated.

Thanks,
Alvin

PS: Please cc me directly on replies:
   a a n (at) crlogic (dot) com