asterisk users - Dec 2006 - sip_write warning when executing Pickup of CAPI

I'm trying to pick up a ringing SIP phone (203) across the office with

 

exten => *9,1,Pickup(783743)

 

where 783743 is the local part of the number that our ISDN works on.

 

I tried all of these first:

exten => *9,1,Pickup(203)

exten => *9,1,Pickup(SIP/203)

exten => *9,1,Pickup(203@internal)

and got a "declined" message back from my phone (snom 300), so I then
switched to picking up the ringing ISDN line (it's BT ISDN2e on a pair of
Eicon Diva BRI-2M cards)

 

The Pickup(783743) works (the phone across the room stops ringing), but the
calling party gets a nasty distorted noise back down the phone, and I get
dozens of these messages:

 

Dec  5 11:37:50 WARNING[26972]: chan_sip.c:2561 sip_write: Asked to transmit
frame type 64, while native formats is 4 (read/write = 64/64)

 

Any ideas what I'm doing wrong? Asterisk is 1.2.11 on Debian with
2.6.8-2-686 kernel.

 

Thanks

Tom

 

 

 

 

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On Tue, 5 Dec 2006, Tom Fanning wrote:
> I'm trying to pick up a ringing SIP phone (203) across the office with
> exten => *9,1,Pickup(783743)
>
> where 783743 is the local part of the number that our ISDN works on.
> 
> I tried all of these first:
> 
> exten => *9,1,Pickup(203)
> 
> exten => *9,1,Pickup(SIP/203)
> 
> exten => *9,1,Pickup(203@internal)
> 
> and got a "declined" message back from my phone (snom 300), so I
then
> switched to picking up the ringing ISDN line (it's BT ISDN2e on a pair
of
> Eicon Diva BRI-2M cards)
> 
> The Pickup(783743) works (the phone across the room stops ringing), but the
> calling party gets a nasty distorted noise back down the phone, and I get
> dozens of these messages:
> 
> Dec  5 11:37:50 WARNING[26972]: chan_sip.c:2561 sip_write: Asked to
transmit
> frame type 64, while native formats is 4 (read/write = 64/64)
This sounds like a bug in Asterisk. chan-capi only accepts one format (alaw 
or ulaw), which is configured as native format.
Asterisk here sends frames of type 64 (SLINEAR), which is wrong and not 
accepted by chan-capi.
I cannot tell why Asterisk is doing that.

Armin