SIP Trunk von Versatel

Hallo,
wir haben im Zuge eines Umzugs eine Umstellung von ISDN zu SIP aufs Auge gedrückt bekommen.
Nun haben wir nach mehreren Stunden schonmal ein Teilziel erreicht, sodass wir schonmal über das Zentrale Team angerufen werden können.
Jedoch funktionieren unsere Durchwahlen nicht…
Wir bekommen folgenden Error und wissen nicht was wir dagegen tun können:

[Oct  5 15:02:41] ERROR[22439][C-00000007]: translate.c:1396 ast_translator_best_choice: Cannot determine best translation path since one capability supports no formats
[Oct  5 15:02:41] WARNING[22439][C-00000007]: core_local.c:992 local_request_with_stream_topology: No translator path exists for channel type Local (native (codec2|g723|ulaw|alaw|gsm|g726|g726aal2|adpcm|slin|slin12|slin16|slin24|slin32|slin44|slin48|slin96|slin192|lpc10|g729|speex|speex16|speex32|ilbc|g722|siren7|siren14|testlaw|g719|opus|jpeg|png|h261|h263|h263p|h264|h265|mpeg4|vp8|vp9|red|t140|t38|silk8|silk12|silk16|silk24)) to (nothing)
[Oct  5 15:02:41] WARNING[22439][C-00000007]: app_dial.c:2578 dial_exec_full: Unable to create channel of type 'Local' (cause 0 - Unknown)
    -- No devices or endpoints to dial (technology/resource)
    -- Executing [ext@sub_main-78033:4] Verbose("PJSIP/mdc_trunk_conf-1-00000007", "1,sub_main-Dialstatus: CHANUNAVAIL") in new stack
 sub_main-Dialstatus: CHANUNAVAIL
    -- Executing [ext@sub_main-78033:5] Return("PJSIP/mdc_trunk_conf-1-00000007", "") in new stack
    -- Executing [78033-dial@mdc_ident-68:7] Gosub("PJSIP/mdc_trunk_conf-1-00000007", "sub_suffix-78033,ext,1") in new stack
    -- Executing [ext@sub_suffix-78033:1] Gosub("PJSIP/mdc_trunk_conf-1-00000007", "mdc_template-1,s,1") in new stack
    -- Executing [s@mdc_template-1:1] GotoIf("PJSIP/mdc_trunk_conf-1-00000007", "1?next_1") in new stack
    -- Goto (mdc_template-1,s,4)
    -- Executing [s@mdc_template-1:4] Gosub("PJSIP/mdc_trunk_conf-1-00000007", "sub_mailbox-recording,s,1(78033,u)") in new stack
    -- Executing [s@sub_mailbox-recording:1] Verbose("PJSIP/mdc_trunk_conf-1-00000007", "1,sub_mailbox-recording:: voicebox: 78033 options: u") in new stack
 sub_mailbox-recording:: voicebox: 78033 options: u
    -- Executing [s@sub_mailbox-recording:2] GotoIf("PJSIP/mdc_trunk_conf-1-00000007", "0?s-false,1") in new stack
    -- Executing [s@sub_mailbox-recording:3] Gosub("PJSIP/mdc_trunk_conf-1-00000007", "sub_mailbox-check,s,1(78033)") in new stack
    -- Executing [s@sub_mailbox-check:1] Verbose("PJSIP/mdc_trunk_conf-1-00000007", "1,sub_mailbox-check:: voicebox: 78033") in new stack
 sub_mailbox-check:: voicebox: 78033
    -- Executing [s@sub_mailbox-check:2] GotoIf("PJSIP/mdc_trunk_conf-1-00000007", "1?s-true,1:s-false,1") in new stack
    -- Goto (sub_mailbox-check,s-true,1)
    -- Executing [s-true@sub_mailbox-check:1] Verbose("PJSIP/mdc_trunk_conf-1-00000007", "1,sub_mailbox-check:: voicebox: 78033 exists") in new stack
 sub_mailbox-check:: voicebox: 78033 exists
    -- Executing [s-true@sub_mailbox-check:2] Set("PJSIP/mdc_trunk_conf-1-00000007", "MDC_VOICECHECK=1") in new stack
    -- Executing [s-true@sub_mailbox-check:3] Return("PJSIP/mdc_trunk_conf-1-00000007", "") in new stack
    -- Executing [s@sub_mailbox-recording:4] GotoIf("PJSIP/mdc_trunk_conf-1-00000007", "0?s-false,1") in new stack
    -- Executing [s@sub_mailbox-recording:5] ExecIf("PJSIP/mdc_trunk_conf-1-00000007", "1?Set(CALLERID(num)=0,017645649402)") in new stack
    -- Executing [s@sub_mailbox-recording:6] Set("PJSIP/mdc_trunk_conf-1-00000007", "CHANNEL(hangup_handler_push)=hdlr-voicemail,s,1") in new stack
    -- Executing [s@sub_mailbox-recording:7] VoiceMail("PJSIP/mdc_trunk_conf-1-00000007", "78033,u") in new stack
    -- <PJSIP/mdc_trunk_conf-1-00000007> Playing 'vm-theperson.slin' (language 'de')
    -- <PJSIP/mdc_trunk_conf-1-00000007> Playing 'digits/7.slin' (language 'de')
    -- <PJSIP/mdc_trunk_conf-1-00000007> Playing 'digits/8.slin' (language 'de')
    -- <PJSIP/mdc_trunk_conf-1-00000007> Playing 'digits/0.slin' (language 'de')
  == Spawn extension (sub_mailbox-recording, s, 7) exited non-zero on 'PJSIP/mdc_trunk_conf-1-00000007'
    -- PJSIP/mdc_trunk_conf-1-00000007 Internal Gosub(hdlr-voicemail,s,1) start

Anrufe kommen wohl an und die richtige Nebenstelle wird “ausgewählt” aber nach der obigen Error stelle kommt die Ansage, dass der angerufene aktuelle nicht erreichbar ist.