Integrating GSM gateway+Asterisk

Asterisk Asterisk SIP
1

Hello all,

Currently I am configuring my GSM gateway with Asterisk. I encounter some difficulties. I have a 04 SIM GSM gateway, I want to link each SIM to a specific extension for both incoming and outgoing calls.

Configuring SIP trunk in Asterisk
[9999]
host=192.168.1.111
fromdomain=192.168.1.111
type=peer
disallow=all
allow=all
context=trunkinbond
qualify=yes

Setting outbound & inbound
Outbound :
exten => _0X.,1,Dial(SIP/9999/${EXTEN:1})
exten => _0X.,n,Hangup

Inbound :
[trunkinbound]

exten => _X.,1,Dial(SIP/1200)

The above configuration works, I can make and receive calls from a landline. I just want to link each SIM slot to one or more specific stations. like if extension 1300 makes a call to the outside that it places on SIM1
1300------SIM1
1301------SIM2
1200, 1201--------SIM3
1400------SIM4

For incoming calls
SIM1------1300
SIM2------1301
SIM3------1200
SIM4------1400

Please I need help.



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2

This can cause overlong packets.

chan_sip is no longer supported and few people here remember how to use it.

This requires information about the type and configuration of the gateway.

I assume GSM doesn’t mean GSM, as 2G is being phased out.

3

Hi david551, this is a GSM LTE gateway