[dev_hints]
exten => l300,hint,Custom:l300
exten => b300,hint,Custom:b300
exten => 300,hint,SIP/300

exten => l301,hint,Custom:l301
exten => b301,hint,Custom:b301
exten => 301,hint,SIP/301

exten => l302,hint,Custom:l302
exten => b302,hint,Custom:b302
exten => 302,hint,SIP/302

exten => l303,hint,Custom:l303
exten => b303,hint,Custom:b303
exten => 303,hint,SIP/303

exten => l304,hint,Custom:l304
exten => b304,hint,Custom:b304
exten => 304,hint,SIP/304