[asterisk-dev] Presentation bit and local channels

[Alistair Cunningham]

On Asterisk 1.2.5, the presentation bit is not preserved across 
Dial(Local/...). This breaks callerid in the following scenario:

PSTN -> Zap -> Asterisk -> Zap -> PSTN -> Some UK mobile providers such 
as Vodafone.

The presentation bit comes in as 3 (provided by the network) and goes 
out as 0 (provided by the user, not screened). Vodafone seems to hide 
callerid if the presentation bit is 0.

If there is no Dial(Local/...), just a Dial(Zap/...) then the 
presentation bit is left as 3 for the outbound call.

Using SetCallerPres(allowed) provides a workaround, and this is what we 
are doing now.

To me, this seems a bug. Would anyone have any objections to me opening 
a Mantis ticket for it?

-- 
Alistair Cunningham,
Integrics Ltd,
+44 (0)7870 699 479
http://integrics.com/