asterisk users - Jan 2004 - Registering multiple FWD accounts

Can multiple FWD accounts be registered?

I have the following output in my sip.conf file:

register=74928:xxx@fwd.pulver.com/74928
register=75160:xxx@fwd.pulver.com/75160
register=74573:xxx@fwd.pulver.com/74573

[fwd-74928]
type=friend
secret=xxx
username=74928
host=fwd.pulver.com

[fwd-75160]
type=friend
secret=xxx
username=75160
host=fwd.pulver.com

[fwd-74573]
type=friend
secret=xxx
username=74573
host=fwd.pulver.com

Two questions :

What exactly does [fwd-74573] mean in this case anyway? Does this category
define a local users which another client can then logon to (e.g. I don't
really need this) - or is this actually necessary to get FWD working? I notice
in online examples that people use [fwd.pulver.com] - but I gather I can't
have three of these as it would conflict. The
register=74928:xxx@fwd.pulver.com/74928 clause already does the logging in
surely - so are the [] required?

Secondly, using the above setup - when an incoming call comes in to 74928 I get
the following output:

-- Executing Answer("SIP/74573-aeb6", "") in new stack
    -- Executing Wait("SIP/74573-aeb6", "1") in new stack
    -- Executing Playback("SIP/74573-aeb6", "welcomemsg") in
new stack
    -- Playing 'welcomemsg' (language 'en')

- which is strange, considering it was 74928 that was dialled!! However, the
extension correctly associated with 74928 does ring (even when called from a
true FWD client outside of this asterisk server). The other extensions work fine
too. So it almost seems like FWD is correctly registered three times... but just
the cosmetic log output is wrong.

Is there actually a problem with this?

My extensions.conf is attached below for reference.

Thanks,

Terence

---------------------

exten => 74928,1,Answer
exten => 74928,2,Wait(1)
exten => 74928,3,Playback(welcomemsg)
exten =>
74928,4,Dial(SIP/TerenceParker&SIP/DavidLiu&SIP/GardenVista&SIP/PeterLiu,90,tm)
exten => 74928,5,Voicemail,u999
exten => 74928,6,Hangup
exten => 74928,102,Voicemail,b999
exten => 74928,103,Hangup

exten => 75160,1,Answer
exten => 75160,2,Dial(SIP/DavidLiu,180,tm)
exten => 75160,3,Voicemail,u1000
exten => 75160,4,Hangup
exten => 75160,102,Voicemail,b1000
exten => 75160,103,Hangup

exten => 74573,1,Answer
exten => 74573,2,Dial(SIP/TerenceParker,180,tm)
exten => 74573,3,Voicemail,u1001
exten => 74573,4,Hangup
exten => 74573,102,Voicemail,b1001
exten => 74573,103,Hangup
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Hi!
> Can multiple FWD accounts be registered?
Yes.
> I have the following output in my sip.conf file:
> 
> register=74928:xxx@fwd.pulver.com/74928
> register=75160:xxx@fwd.pulver.com/75160
> register=74573:xxx@fwd.pulver.com/74573
Ok so far. Now consider this:

1. you register in order to be called: FWD must know where at which IP 
address to to find you. That is all that the register does, nothing else.
2. you need to set up a SIP user to treat incoming FWD calls so that you 
can at least set a context for those
3. finally you need SIP user accounts for dialing out via FWD

If you would like to dial out to FWD with always the same FWD account 
when users are connected to Asterisk, then you can combine [fwd-74928] 
and [FreeWorldDialup] under the section name [fwd-74928] by merging the 
entries and using type=friend instead.


--- extensions.conf ---

[fwd-in]
; here we treat incoming FWD calls
; we arrive here because we defined host=fwd.pulver.com 
; for the peer [FreeWorldDialup] that has this context [fwd-in]
exten => s,1,Hangup
exten => 74928,1,Answer
exten => 74928,2,Goto(voicemenu,s,1)
exten => 74928,3,Hangup
exten => 75160,1,Dial(SIP/john,20,rt)
exten => 75160,2,Hangup

[default]
; dialing out to FWD
; prefix 1 for calling as user 74928, prefix 2 for ...
; we might also insert a SetCallerID() statement here
exten => _1X.,1,Dial(SIP/${EXTEN:1}@fwd-74928)
exten => _2X.,1,Dial(SIP/${EXTEN:1}@fwd-75160)

[sip-john]
; dialing out to FWD
; alternative: have a personal context for each SIP user, 
; this way we don't need to add a dial prefix like above
; and we don't need to offer FWD dialout with our private
; accounts to everyone that has access to [default]
include => default
exten => _X.,1,Dial(SIP/${EXTEN:1}@fwd-74573)


--- sip.conf ---

[FreeWorldDialup]
; we don't do any authentication for calls coming from FWD
context=fwd-in
type=user
hostname=fwd.pulver.com
> [fwd-74928]
; fwd alias for this Asterisk PBX
; as you can see this is for outgoing calls only
> type=peer
> secret=xxx
auth=md5
> username=74928
fromuser=74928
> host=fwd.pulver.com
> 
> [fwd-75160]
; fwd alias for john
> type=peer
> secret=xxx
auth=md5
> username=75160
fromuser=75160
> host=fwd.pulver.com
> 
> [fwd-74573]
; fwd alias for mary
> type=peer
auth=md5
> secret=xxx
> username=74573
fromuser=74573
> host=fwd.pulver.com
[john]
context=sip-john
type=friend
secret=xxxx
host=dynamic
disallow=all
allow=ualw
allow=gsm
...

[mary]
context=default
...
> FWD working? I notice in online examples that people use
> [fwd.pulver.com] 
If you can avoid it don't use sip.conf usernames in [] that are identical 
to a FQDN hostname. It works, but it is usually cause for a lot of 
confusion, makes your setup much harder to understand.

Cheers, Philipp