Register Trunk for each FXS port on GXW4224?

@avayax wrote:

I am setting up a trunk between a Grandstream GXW4224 FXS gateway and FreePBX.
Everything works, but only if I register each FXS port separately on Asterisk with extension as the SIP user ID/username

Now that means I have to build a trunk for each FXS port and that seems overkill.

I want to register all ports on the gateway to Asterisk with the same credentials and when a call from Asterisk goes to the Grandstream, it should route it to the right FXS port according to what number was dialed.
So match by called number or by some other method. Is there a way to do that?

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