[asterisk-users] Confused about notifyringing in sip.conf

[Philipp von Klitzing]

Hi!

> notifyringing = no ; Control whether subscriptions already 
> INUSE get sent RINGING when another call is sent (default: yes)
> 
> Does this mean that when I mark this as "yes", a phone that already has
> taken a call will be send a second and third call ?!

No, not directly: This setting is only about SIP subscription information 
spread via NOTIFY messages, and thus only concerns the hint (BLF) feature 
of Asterisk.

> I want that if a phone is in use (calling), the phone does not ring on a
> second call.

The term you are looking for is "call waiting"; use GROUP() or 
call-limit= to control the number of calls for a specific phone (or 
employ DEVICE_STATE()).

Philipp