FAX ausgehend über ISDN an Telekom nicht möglich

[steffen0377]

Hallo Gemeinde!

Ich habe da mal ein Problem, bei dem ich mit meiner Logik irgendwie nicht mehr weiterkomme.
Szenario:

• Analoges Fax über Mediant (Audiocodes) an TK-Anlage (SWYX alias Netphone) angebunden
• TK (noch) über ISDN (gesteckte Karte in Anlage) an Telefonnetz (Anlagenanschluss)

Über dieses Fax können fast keine Faxe nach ausserhalb gesendet werden. Das Fax zeigt dann immer "Leitung besetzt".
Bei der Fehlersuche habe ich folgende Konstellationen herausgefunden:

• Faxen von analog an internen Benutzer (Faxclient) geht. Also Mediant und Registrierung in Ordnung
• Faxen von analog an externe Anlage (Anschluss bei der Telekom, VoIP) geht nicht. Gespräch wird sofort beendet
• Faxen von analog an externe Anlage (Anschluss bei der "Deutschen Telefon Standard", VoIP) geht
  
• Faxen von Software-Client an externe Anlage geht an beide Anschlüsse

Die externe Anlage für diese Tests war eine Starface, beide Rufnummern kommen beim selben Benutzer an und sind identisch konfiguriert (beides Fax2Mail)

Hier mal die Auszüge aus dem PBX-Log der Starface-Anlage:

Fax an die Telekom-Rufnummer:
[INDENT][Dec 19 09:41:58] VERBOSE[2448][C-000000dd] res_rtp_asterisk.c:        > 0x7ff6b016f500 -- Strict RTP learning after remote address set to: 217.0.7.69:58834
[Dec 19 09:41:58] VERBOSE[10208][C-000000dd] pbx.c:     -- Executing [1234567@7777777-incoming:1] Set("SIP/+4999997777777-00000187", "channelname=7777777-incoming") in new stack
[Dec 19 09:41:58] VERBOSE[10208][C-000000dd] pbx.c:     -- Executing [1234567@7777777-incoming:2] Set("SIP/+4999997777777-00000187", "lineconfigid=1024") in new stack
[Dec 19 09:41:58] VERBOSE[10208][C-000000dd] pbx.c:     -- Executing [1234567@7777777-incoming:3] Goto("SIP/+4999997777777-00000187", "7777777-incoming-manuell,1234567,1") in new stack
[Dec 19 09:41:58] VERBOSE[10208][C-000000dd] pbx.c:     -- Goto (7777777-incoming-manuell,1234567,1)
[Dec 19 09:41:58] VERBOSE[10208][C-000000dd] pbx.c:     -- Executing [1234567@7777777-incoming-manuell:1] Goto("SIP/+4999997777777-00000187", "incoming,1234567,1") in new stack
[Dec 19 09:41:58] VERBOSE[10208][C-000000dd] pbx.c:     -- Goto (incoming,1234567,1)
[Dec 19 09:41:58] VERBOSE[10208][C-000000dd] pbx.c:     -- Executing [1234567@incoming:1] Goto("SIP/+4999997777777-00000187", "calling,1234567,1") in new stack
[Dec 19 09:41:58] VERBOSE[10208][C-000000dd] pbx.c:     -- Goto (calling,1234567,1)
[Dec 19 09:41:58] VERBOSE[10208][C-000000dd] pbx.c:     -- Executing [1234567@calling:1] GotoIf("SIP/+4999997777777-00000187", "0?4") in new stack
[Dec 19 09:41:58] VERBOSE[10208][C-000000dd] pbx.c:     -- Executing [1234567@calling:2] AGI("SIP/+4999997777777-00000187", "agi:async,,1024,,,,,,,,,,,,,,") in new stack
[Dec 19 09:41:58] VERBOSE[10208][C-000000dd] res_agi.c:     -- AGI Script Executing Application: (SIPRemoveHeader) Options: (X-UCI_CALLID)
[Dec 19 09:41:58] VERBOSE[10208][C-000000dd] res_agi.c:     -- AGI Script Executing Application: (SIPAddHeader) Options: (X-UCI_CALLID:4173b40b-ea9c-48f6-885c-2ee2360ac683)
[Dec 19 09:41:58] VERBOSE[10208][C-000000dd] res_agi.c:     -- AGI Script Executing Application: (Set) Options: (CALLERID(name)=004999991234567:)
[Dec 19 09:41:58] VERBOSE[10208][C-000000dd] res_agi.c:     -- AGI Script Executing Application: (Set) Options: (DYNAMIC_FEATURES=)
[Dec 19 09:41:58] WARNING[10208][C-000000dd] func_channel.c: Unknown or unavailable item requested: 'echocan_mode'
[Dec 19 09:41:58] VERBOSE[10208][C-000000dd] res_agi.c:     -- AGI Script Executing Application: (Ringing) Options: ()
[Dec 19 09:41:58] VERBOSE[10208][C-000000dd] res_agi.c:     -- AGI Script Executing Application: (Wait) Options: (1)
[Dec 19 09:41:59] VERBOSE[10208][C-000000dd] res_agi.c:     -- AGI Script Executing Application: (Playback) Options: (silence/short)
[Dec 19 09:42:00] VERBOSE[10208][C-000000dd] res_rtp_asterisk.c:        > 0x7ff6b016f500 -- Strict RTP switching to RTP remote address 217.0.7.69:58834 as source
[Dec 19 09:42:00] VERBOSE[10208][C-000000dd] file.c:     -- <SIP/+4999997777777-00000187> Playing 'silence/short.slin16' (language 'de')
[Dec 19 09:42:00] VERBOSE[10208][C-000000dd] res_rtp_asterisk.c:        > 0x7ff6b016f500 -- Strict RTP learning complete - Locking on source address 217.0.7.69:58834
[Dec 19 09:42:00] VERBOSE[10208][C-000000dd] res_agi.c:     -- AGI Script Executing Application: (Dial) Options: (IAX2/ttyIAX8,10)
[Dec 19 09:42:00] VERBOSE[10208][C-000000dd] app_dial.c:     -- Called IAX2/ttyIAX8
[Dec 19 09:42:00] VERBOSE[2268][C-000000dd] chan_iax2.c:     -- Call accepted by 127.0.0.1 (format alaw)
[Dec 19 09:42:00] VERBOSE[2268][C-000000dd] chan_iax2.c:     -- Format for call is (alaw)
[Dec 19 09:42:00] VERBOSE[10208][C-000000dd] app_dial.c:     -- IAX2/ttyIAX8-3545 is ringing
[Dec 19 09:42:00] VERBOSE[10208][C-000000dd] app_dial.c:     -- IAX2/ttyIAX8-3545 answered SIP/+4999997777777-00000187
[Dec 19 09:42:00] VERBOSE[10208][C-000000dd] pbx.c:     -- Executing [h@calling:1] NoOp("SIP/+4999997777777-00000187", "HC 16") in new stack
[Dec 19 09:42:00] VERBOSE[10208][C-000000dd] pbx.c:     -- Executing [h@calling:2] Goto("SIP/+4999997777777-00000187", "_exit_,0") in new stack
[Dec 19 09:42:00] VERBOSE[10208][C-000000dd] pbx.c:     -- Goto (calling,_exit_,0)
[Dec 19 09:42:00] VERBOSE[10208][C-000000dd] chan_iax2.c:     -- Hungup 'IAX2/ttyIAX8-3545'
[Dec 19 09:42:00] VERBOSE[10208][C-000000dd] pbx.c:   == Spawn extension (calling, 1234567, 2) exited non-zero on 'SIP/+4999997777777-00000187'[/INDENT]

Und hier dasselbe an den Anschluss bei der "Deutschen Telefon Standard"
[INDENT][Dec 19 09:45:48] VERBOSE[2448][C-000000de] res_rtp_asterisk.c:        > 0x7ff6b016f500 -- Strict RTP learning after remote address set to: 92.60.208.22:38492
[Dec 19 09:45:48] VERBOSE[10503][C-000000de] pbx.c:     -- Executing [+4999994444444@DeutscheTelefon-incoming:1] Set("SIP/+499999444440-00000188", "channelname=DeutscheTelefon-incoming") in new stack
[Dec 19 09:45:48] VERBOSE[10503][C-000000de] pbx.c:     -- Executing [+4999994444444@DeutscheTelefon-incoming:2] Set("SIP/+499999444440-00000188", "lineconfigid=1956") in new stack
[Dec 19 09:45:48] VERBOSE[10503][C-000000de] pbx.c:     -- Executing [+4999994444444@DeutscheTelefon-incoming:3] Goto("SIP/+499999444440-00000188", "DeutscheTelefon-incoming-manuell,+4999994444444,1") in new stack
[Dec 19 09:45:48] VERBOSE[10503][C-000000de] pbx.c:     -- Goto (DeutscheTelefon-incoming-manuell,+4999994444444,1)
[Dec 19 09:45:48] VERBOSE[10503][C-000000de] pbx.c:     -- Executing [+4999994444444@DeutscheTelefon-incoming-manuell:1] Goto("SIP/+499999444440-00000188", "incoming,+4999994444444,1") in new stack
[Dec 19 09:45:48] VERBOSE[10503][C-000000de] pbx.c:     -- Goto (incoming,+4999994444444,1)
[Dec 19 09:45:48] VERBOSE[10503][C-000000de] pbx.c:     -- Executing [+4999994444444@incoming:1] Goto("SIP/+499999444440-00000188", "calling,004999994444444,1") in new stack
[Dec 19 09:45:48] VERBOSE[10503][C-000000de] pbx.c:     -- Goto (calling,004999994444444,1)
[Dec 19 09:45:48] VERBOSE[10503][C-000000de] pbx.c:     -- Executing [004999994444444@calling:1] GotoIf("SIP/+499999444440-00000188", "0?4") in new stack
[Dec 19 09:45:48] VERBOSE[10503][C-000000de] pbx.c:     -- Executing [004999994444444@calling:2] AGI("SIP/+499999444440-00000188", "agi:async,,1956,,,,,,,,,,,,,,") in new stack
[Dec 19 09:45:48] VERBOSE[10503][C-000000de] res_agi.c:     -- AGI Script Executing Application: (SIPRemoveHeader) Options: (X-UCI_CALLID)
[Dec 19 09:45:48] VERBOSE[10503][C-000000de] res_agi.c:     -- AGI Script Executing Application: (SIPAddHeader) Options: (X-UCI_CALLID:706b8d40-c4c5-4200-bf41-130d71aea592)
[Dec 19 09:45:48] VERBOSE[10503][C-000000de] res_agi.c:     -- AGI Script Executing Application: (Set) Options: (CALLERID(name)=004999994444444:)
[Dec 19 09:45:48] VERBOSE[10503][C-000000de] res_agi.c:     -- AGI Script Executing Application: (Set) Options: (DYNAMIC_FEATURES=)
[Dec 19 09:45:48] WARNING[10503][C-000000de] func_channel.c: Unknown or unavailable item requested: 'echocan_mode'
[Dec 19 09:45:48] VERBOSE[10503][C-000000de] res_agi.c:     -- AGI Script Executing Application: (Ringing) Options: ()
[Dec 19 09:45:48] VERBOSE[10503][C-000000de] res_agi.c:     -- AGI Script Executing Application: (Wait) Options: (1)
[Dec 19 09:45:50] VERBOSE[10503][C-000000de] res_agi.c:     -- AGI Script Executing Application: (Playback) Options: (silence/short)
[Dec 19 09:45:50] VERBOSE[10503][C-000000de] res_rtp_asterisk.c:        > 0x7ff6b016f500 -- Strict RTP switching to RTP remote address 92.60.208.22:38492 as source
[Dec 19 09:45:50] VERBOSE[10503][C-000000de] file.c:     -- <SIP/+499999444440-00000188> Playing 'silence/short.slin16' (language 'de')
[Dec 19 09:45:50] VERBOSE[10503][C-000000de] res_rtp_asterisk.c:        > 0x7ff6b016f500 -- Strict RTP learning complete - Locking on source address 92.60.208.22:38492
[Dec 19 09:45:50] VERBOSE[10503][C-000000de] res_agi.c:     -- AGI Script Executing Application: (Dial) Options: (IAX2/ttyIAX8,10)
[Dec 19 09:45:50] VERBOSE[10503][C-000000de] app_dial.c:     -- Called IAX2/ttyIAX8
[Dec 19 09:45:50] VERBOSE[2344][C-000000de] chan_iax2.c:     -- Call accepted by 127.0.0.1 (format alaw)
[Dec 19 09:45:50] VERBOSE[2344][C-000000de] chan_iax2.c:     -- Format for call is (alaw)
[Dec 19 09:45:50] VERBOSE[10503][C-000000de] app_dial.c:     -- IAX2/ttyIAX8-7678 is ringing
[Dec 19 09:45:50] VERBOSE[10503][C-000000de] app_dial.c:     -- IAX2/ttyIAX8-7678 answered SIP/+499999444440-00000188
[Dec 19 09:46:31] VERBOSE[2141] asterisk.c:     -- Remote UNIX connection
[Dec 19 09:46:31] VERBOSE[10605] asterisk.c:     -- Remote UNIX connection disconnected
[Dec 19 09:46:35] VERBOSE[10503][C-000000de] pbx.c:     -- Executing [h@calling:1] NoOp("SIP/+499999444440-00000188", "HC 16") in new stack
[Dec 19 09:46:35] VERBOSE[10503][C-000000de] pbx.c:     -- Executing [h@calling:2] Goto("SIP/+499999444440-00000188", "_exit_,0") in new stack
[Dec 19 09:46:35] VERBOSE[10503][C-000000de] pbx.c:     -- Goto (calling,_exit_,0)
[Dec 19 09:46:35] VERBOSE[10503][C-000000de] chan_iax2.c:     -- Hungup 'IAX2/ttyIAX8-7678'
[Dec 19 09:46:35] VERBOSE[10503][C-000000de] pbx.c:   == Spawn extension (calling, 004999994444444, 2) exited non-zero on 'SIP/+499999444440-00000188'[/INDENT]

[Edit Novize:Monsterlog in code-Tags geklammert]

Was ich hierbei nicht verstehe, ist der Punkt, das die Faxe über ISDN rausgehen. Da findet doch keine separate Protokollaushandlung statt. Oder doch? Zumindest die ISDN-Übertragung von der Anlage zur Telekom sollte hierbei doch immer gleich sein. Die SIP-Aushandlungen kommen doch erst ab dem Telekom-Knoten, der ISDN im Hintergrund doch wieder auf IP umsetzt. Und da die Telekom nur G.711a unterstützt, kein T.38 oder ähnliches, sollte die Übertragung hier auch wieder überall gleich sein, egal, an welchen gegenüberliegenden VoIP-Provider. Denkfehler?

schon mal vielen Dank im Voraus an die vielen fleißigen Helfer!

Steffen