[Asterisk-Users] What does "Page" application do?

[janvb at caselaboratories.com]

>>I think most all of the phones have a hack to get it working. Aastra
>>analog ADSI phones even work as I read some where...
>>    
>>
Not the phones, but Asterisk needs to have a 'hack' to get this working. 
So, there must somethere i * code be a list of phones that has been 
implemented.

PABX phones usually solved this because the PABX and phone vendor where 
the same. An analogue phone can be supported if it allows a broadcast to 
the speaker, which require that it has some intelligence to know that it 
needs to open the voice stream to the speaker even if the called has not 
picked up the phone. (The PABX can obviously intercept the voice stream 
and broadcast a message, but this is not really paging) H.323, SIP and 
many others have the same problem but the 'hack' is in these cases are a 
separate RTP stream to the speaker, without any call control, if this is 
allowerd (a majority of VoIP phones will allow 3 independant rtp 
streams) as ca 70% of the marked is Broadcom chips these days.

I would expect that any phone which has this capability and that are 
commonly used would be supported in Asterisk?

Jan