[Freeswitch-users] How to know inbound call arrive from which gateway?

[Pip Live]

Sorry this maybe a very simple question but I checked Wiki/Dialplan without
finding an answer.

How can I know inbound call arrive at which sofia gateway in dialplan? My
purpose is to add a prefix to all inbound call from a certain gateway. I
cannot use the "destination_number" built_in variable for this purpose, as
in my case DID bind to a specific gateway hardware is often changing. Is
that another varialbe to be used, eg. a gateway name etc?

/Alex
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