Asterisk-GUI is blocking transfer

I’v configured my IP-PBX with Asterisk-GUI.
All options about “transfer” were chosen.
But I still can not transfer calls with #. Only beep.

I’ve figured out, that the problem is in Dial command for peers, there is no t and T options. But I have no idea, how to add it there.
All peers are in context “default”. In extensions.conf there is nothing about these peers.

When I do “dialplan show default” I see following:

  '102' =>          hint: SIP/102                                 [pbx_config]
                    1. Dial(${HINT})                              [pbx_config]
  '103' =>          hint: SIP/103                                 [pbx_config]
                    1. Dial(${HINT})                              [pbx_config]
  '104' =>          hint: SIP/104                                 [pbx_config]
                    1. Dial(${HINT})                              [pbx_config]
  '105' =>          hint: SIP/105                                 [pbx_config]
                    1. Dial(${HINT})                              [pbx_config]
  '106' =>          hint: SIP/106                                 [pbx_config]
                    1. Dial(${HINT})                              [pbx_config]
  '107' =>          hint: SIP/107                                 [pbx_config]
                    1. Dial(${HINT})                              [pbx_config]

Where I can find these HINTs?

PS I have already done “grep -R hint /etc/asterisk”. No effect… :frowning: