Can I assign a number to a telephone adapter on an FXO port?

Question

linux

Hello. There is a Grandstream HT-813 adapter box. An analog TA is connected to the FXO. Ezernotu it is included in PBX Asterisk. And in FXS, it is connected to a telephone multiplexer, which, in turn, is connected to a city PBX
. The question is, is it possible to assign a number to the HT-813 adapter on the FXO port, and so that when it is dialed, the box does something. For example, was the call sent to the asterisk context or forwarded to an existing number? When calling the FXO number, some action should take place on the side of the box without the participation of the TA, is it possible to do this?

Answer 1

Telephone sets are connected to FXS ports, and PBX to FXO. FXS ports are assigned sip accounts and FXO ports are trunks. If the box can be a server, then you can set up call routing rules, but usually the main one is the asterisk server, and the box is just a bunch of ports.
Thus, the FXS ports have a number that is assigned to the account, if you call it, the physical phone rings. The FXO ports do not have a number - the physical pair to which it is connected (landline) has a number, when you call it, it will tell the aster that there is a call, perhaps even the number will be determined, and the aster will decide which phone will ring according to the rules.