Is it possible to configure automatic selection of the required operator on the GSM gateway?

Question

Asterisk

Good afternoon!
There is Asterisk configured from which output calls go through the Neogate tg800 GSM gateway (8 sim cards), now all sim cards of one operator are here. There is an idea to insert different operators and so that when you call, the SIM card of the operator to which the call is being made is automatically selected. The question is how to do it?

Answer 1

Well, the prefix is ​​​​not really needed here :) (the prefix is ​​\u200b\u200busually cut off - chik and that's it)
Dialing rules, I would say
, for example, there is a number 7495******* - it is better to call sim card 1 on it and there is a number 7496 **** *
Create rule 7495. (dot in this case any number further... or hard through X (any single number from 0-9) and use simcard1 trunk
Create rule 7496. (same) use simpart2 trunk

Answer 2

in asterisk, set the prefix as a sign of the operator
in the gateway, by the prefix, determine through which SIM group this call can be sent and cut the prefix

Answer 3

There is a smart working solution, but it is paid. Interesting - write in a personal.

Answer 4

Finally got to this problem, solved as follows.
Created on the gateway for each operator: SIP accounts, simcard groups and SIP->GSM routes.
In the asterisk, I created trunks for each operator, in which I specified the data of the SIP accounts created on the gateway (user, password). Also created outgoing routes with definition by operator codes.