w/o rtcachingfriends

Server A:

    -- Executing Macro("SIP/304-404b", "dialout-IAX2|asterisk2|1|204")
    -- Executing SetCIDName("SIP/304-404b", "Alessandro int. 304") in new stack
    -- Executing SetCIDNum("SIP/304-404b", "*COMPANY_NUMB*") in new stack
    -- Executing Dial("SIP/304-404b", "IAX2/asterisk2/204") in new stack
Tx-Frame Retry[000] -- OSeqno: 000 ISeqno: 000 Type: IAX     Subclass: NEW
   Timestamp: 00016ms  SCall: 16384  DCall: 00000 [192.168.0.2:4569]
   VERSION         : 2
   CALLED NUMBER   : 204
   CODEC_PREFS     : (ilbc|gsm|alaw|ulaw)
   CALLING NUMBER  : *COMPANY_NUMB*
   CALLING PRESNTN : 0
   CALLING TYPEOFN : 0
   CALLING TRANSIT : 0
   CALLING NAME    : Alessandro int. 304
   LANGUAGE        : it
   CALLED CONTEXT  : iax2-in
   USERNAME        : asterisk1
   FORMAT          : 1024
   CAPABILITY      : 64526
   ADSICPE         : 2
   DATE TIME       : 180530951

Rx-Frame Retry[ No] -- OSeqno: 000 ISeqno: 001 Type: IAX     Subclass: ACK
   Timestamp: 00016ms  SCall: 00001  DCall: 16384 [192.168.0.2:4569]
    -- Called asterisk2/204
Rx-Frame Retry[ No] -- OSeqno: 000 ISeqno: 001 Type: IAX     Subclass: AUTHREQ
   Timestamp: 00017ms  SCall: 00001  DCall: 16384 [192.168.0.2:4569]
   AUTHMETHODS     : 4
   CHALLENGE       : 193876472
   USERNAME        : asterisk1

Jun  2 21:56:15 WARNING[9115]: chan_iax2.c:6955 socket_read: I don't know how to authenticate asterisk1 to 192.168.0.2
Tx-Frame Retry[-01] -- OSeqno: 001 ISeqno: 001 Type: IAX     Subclass: ACK
   Timestamp: 00017ms  SCall: 16384  DCall: 00001 [192.168.0.2:4569]
Tx-Frame Retry[000] -- OSeqno: 001 ISeqno: 001 Type: IAX     Subclass: HANGUP
   Timestamp: 06506ms  SCall: 16384  DCall: 00001 [192.168.0.2:4569]
   CAUSE CODE      : 0

    -- Hungup 'IAX2/asterisk2-16384'
Rx-Frame Retry[ No] -- OSeqno: 001 ISeqno: 002 Type: IAX     Subclass: ACK
   Timestamp: 06506ms  SCall: 00001  DCall: 16384 [192.168.0.2:4569]
  == Spawn extension (macro-dialout-IAX2, s, 3) exited non-zero on 'SIP/304-404b' in macro 'dialout-IAX2'
  == Spawn extension (sip-in, 1*204, 1) exited non-zero on 'SIP/304-404b'
    -- Executing Hangup("SIP/304-404b", "") in new stack
  == Spawn extension (sip-in, h, 1) exited non-zero on 'SIP/304-404b'


Server B:

*CLI> Rx-Frame Retry[ No] -- OSeqno: 000 ISeqno: 000 Type: IAX     Subclass: NEW
   Timestamp: 00016ms  SCall: 16384  DCall: 00000 [192.168.0.1:4569]
   VERSION         : 2
   CALLED NUMBER   : 204
   CODEC_PREFS     : (ilbc|gsm|alaw|ulaw)
   CALLING NUMBER  : *COMPANY_NUMB*
   CALLING PRESNTN : 0
   CALLING TYPEOFN : 0
   CALLING TRANSIT : 0
   CALLING NAME    : Alessandro int. 304
   LANGUAGE        : it
   CALLED CONTEXT  : iax2-in
   USERNAME        : asterisk1
   FORMAT          : 1024
   CAPABILITY      : 64526
   ADSICPE         : 2
   DATE TIME       : 180530951

Tx-Frame Retry[-01] -- OSeqno: 000 ISeqno: 001 Type: IAX     Subclass: ACK
   Timestamp: 00016ms  SCall: 00001  DCall: 16384 [192.168.0.1:4569]
Tx-Frame Retry[000] -- OSeqno: 000 ISeqno: 001 Type: IAX     Subclass: AUTHREQ
   Timestamp: 00017ms  SCall: 00001  DCall: 16384 [192.168.0.1:4569]
   AUTHMETHODS     : 4
   CHALLENGE       : 193876472
   USERNAME        : asterisk1

Rx-Frame Retry[ No] -- OSeqno: 001 ISeqno: 001 Type: IAX     Subclass: ACK
   Timestamp: 00017ms  SCall: 16384  DCall: 00001 [192.168.0.1:4569]
Rx-Frame Retry[ No] -- OSeqno: 001 ISeqno: 001 Type: IAX     Subclass: HANGUP
   Timestamp: 06506ms  SCall: 16384  DCall: 00001 [192.168.0.1:4569]
   CAUSE CODE      : 0

Tx-Frame Retry[-01] -- OSeqno: 001 ISeqno: 002 Type: IAX     Subclass: ACK
   Timestamp: 06506ms  SCall: 00001  DCall: 16384 [192.168.0.1:4569]