Asterisk + 3g dongle huawei e173: why is the incoming call not going through?

Question

Asterisk

Installing an asterisk for the first time
During an incoming call, an error in the logs:
pbx.c: Channel 'Dongle/dongle0-0100000008' sent to invalid extension but no invalid handler: context,exten,priority=default,+1234567890,1
Trunk, extensions, incoming and set up outgoing routes through freepbx, I didn’t use any configs ...
Where to drop, tell me?
FreePBX 12.0.76.2
Asterisk 13
Outgoing calls work without problems.

Answer 1

Make an outcast for incoming calls

[dongle-incoming]
exten => _+X.,n,Dial(SIP/111)
exten => _+X.,n,Hangup()

instead of 111, substitute the number where calls should fall

Answer 2

Do you really think that you are the only one who has experienced this?
Search results: 22: invalid extension but no i...
this is only in one forum

Answer 3

I recommend to refuse dongles at once, are planned.