[asterisk-users] Any SLA alternatives?

[Scott Moseman]

I have a group of people who have distinct phone numbers plus a shared
number.  The shared number is actually a group that rings through to
all of their direct numbers.  I want them to: 1) be able to make
outgoing calls as the shared number and 2) be able to make outgoing
calls as their direct number.

Currently it's working in a non-ideal state.  Each user has a phone
with two lines.  One line has the shared number and the other has
their distinct number.  Only one phone has the registration for the
shared number at any point in time.  The outgoing calls from either
line works great from all of the phones.

The problem is when they need to forward the shared line somewhere
else.  Only the phone that's currently registered as the shared line
can do the forwarding.  The users have no way to know, without logging
into all of the phone GUIs, to know which one actually is holding the
registration.

I researched using shared line appearance (SLA), but several people
may need to be able to make outgoing calls using the shared number at
the same time.  From what I read about SLA, it makes the line appear
busy on the other phones.  This is not what I'm looking for.  Is there
a solution for what I'm wanting to do?

[phone1]
line1=5000
line2=5001

[phone2]
line1=5000
line2=5002

[phone3]
line1=5000
line2=5003

That is a brief overview of the phone configs.  I want any/all of them
to be able to make outgoing calls from the 5000 extension, but also
maintain the ability to make calls from their 500x extensions.  I
thought about overwriting all of their Caller ID values, but that
defeats the purpose of having distinct lines per user.

Thanks,
Scott