Forwarding to dynamic external numbers?

Question

Asterisk

Will such a scheme work and what are the limitations?
There is a phone number that receives a call from the outside, then there should be a redirection to another external phone (selected by condition from the database).
The logic is this:
If (SELECT phone FROM redirect WHERE incoming = 'xxxxxxxxxx' ORDER BY id DESC LIMIT 1) then forwarding to a mobile phone from the table, if not, then we continue to call. Will such forwarding work when there are 3-4 simultaneous calls? Do I need a multichannel number for this? Will call recording work?

Answer 1

No, because the number - the handler is busy with a call.
With multi-channel, everything will work

Answer 2

Each transfer of an external call to an external phone will occupy two channels.
And it doesn't matter if they are physical pairs, channels in an E1 stream or in an IP trunk.