How to configure asterisk for subscribers to use their trunks?

Question

Asterisk

Good day to all. I set it up correctly, but it does not work as it should.
Task: during an outgoing call, each call from the subscriber group log should go to its trunk and make a call. Actually the problem is that all calls must be made transparently (ie without a set of additional prefixes).
Given:

• 4 trunks (respectively 4 numbers behind them)
• 4 logical groups
• asterisk with freePBX

One of the solutions I configure Outgoing routes for each trunk. What with a dot (any typed), what without it - the route does not seem to work.

Tell me what can be done to ensure transparent dialing for everyone ?? What other ways are there to provide the service?

Answer 1

exten => _[27]XXXXXX/202,1,NoOp(${EXTEN})
exten => _[27]XXXXXX/202,n,Set(CDR(clid)=alfa)
exten => _[27]XXXXXX /202,n,Dial(SIP/8351${EXTEN}@7298626)
exten => _7351[27]XXXXXX/202,n,Dial(SIP/8${EXTEN:1}@7298626)
exten => _7800XXXXXXX/202 ,n,Dial(SIP/8${EXTEN:1}@7298626)
exten => _8351[27]XXXXXX/202,n,Dial(SIP/${EXTEN}@7298626)
exten => _8800XXXXXXX/202,n, Dial(SIP/${EXTEN}@7298626)
exten => _[27]XXXXXX/200,1,NoOp(${EXTEN})
exten => _[27]XXXXXX/200,n,Set(CDR(clid) =alfa)
exten => _[27]XXXXXX/200,n,Dial(SIP/8351${EXTEN}@7298626)
exten => _7351[27]XXXXXX/200,n,Dial(SIP/8${EXTEN: 1}@7298626)
exten => _7800XXXXXXX/200,n,Dial(SIP/8${EXTEN:1}@7298626)
exten => _8351[27]XXXXXX/200,n,Dial(SIP/${EXTEN}@7298626)
exten => _8800XXXXXXX/200,n,Dial(SIP/${EXTEN}@7298626)
That's where 7298626 is the name any trunk
Everything is done in ex_com.cof