[Asterisk-Dev] PRI U2U display messages

[Klaus-Peter Junghanns]

Hi,

you cannot send INFORMATION messages with DISPLAY IEs to the network. 
However you can do that when you are the network (NT mode) and send them
to an ISDN pbx or ISDN phone.

The "please" hold on your gsm phone was triggered by the ISDN pbx
putting you on hold, so a NOTIFY message was passed through the network.
This also happens when you deflect or forward a call.

best regards

Klaus
-- 
Klaus-Peter Junghanns

CEO, CTO
Junghanns.NET GmbH
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Am Mo, 2004-06-28 um 22.51 schrieb Alfred R. Nurnberger:
> I ran a PRI DEBUG SPAN 1 on our office system.
> I could not see any FACILITIES messages on outgoing calls over the PRI.
> So I suppose * does not send any Caller Id name messages on outgoing pri
> calls.
> 
> CNAME is just a subset of the generic user to user messaging on ISDN
> networks, so it should be possible
> to send characterset IE5  u2u messages and have them show up on other ISDN
> compatible phones.
> My first thought would  be GSM cellphones since The GSM standard is based on
> ISDN.
> I think I remember to have had messages like "please hold" from a isdn-pbx
> in germany on my german gsm phone.
> 
> Any comments on that ?
> 
> - Alfred
> 
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