[asterisk-users] Calling with hidden callerid

[Benny Amorsen]

>>>>> "PH" == Paul Hales <pdhales at optusnet.com.au> writes:

PH> The dialplan command 'setcallerpres' is also good.

Please don't toppost, it makes quoting hard.

Anyway, setcallerpres has the disadvantage for SIP that the number is
not sent at all. This means that the upstream provider cannot give the
number to emergency services.

In the regular phone network, CallerID is always sent, but showing it
is suppressed just before it reaches the final destination -- unless
the destination happens to be e.g. emergency services. SIP does not
have a standard way to achieve this. We encode the information in the
caller name, but it would probably be better to use a custom SIP
header.

setcallerpres works very nicely for PRI lines though, it sends the
CallerID but suppresses showing it. Precisely what is needed for
emergency services.


/Benny