[Asterisk-Users] Trunk Seize - Line 1 - CO1: Does it exist in an Asterisk environment?

[Ben Ryan]

I have a question probably for those in the know in business Asterisk
solutions. I have searched high and low but have not been able to get
any answers. I hope there is someone on the list that can answer my
question.

How do you implement "trunk seize"? This is a feature that is almost
universal in the conventional PBX world.

Say a user, Jane takes a call. The call is for someone else - Fred. Jane
knows Fred is often not in his office, therefore can't do an extension
transfer.
Jane hits "HOLD", puts a page out for the recipient "Fred, telephone
call on Line 1", Fred is out in another office and takes the call by
picking up the handset and hitting "CO1"/"Line1".
How does this happen in a VoIP environment - in Asterisk? What about
other IP telephony environments?
And crucially, with multiple inbound lines, how do you determine a
specific line to grab?

Thanks for any illumination you can provide.