2xHFC, eine wählt nicht raus.

[ranthoron]

Hallo,
folgende Situation: 1x S0 über Arcor, 1x S0 über eine Telefonanlage, beides auf je einer HFC-ISDN-Karte.
Anrufe kommen über beide Anschlüsse herein, nur wenn ich über Arcor rauswählen will, weigert sich die Karte.

/etc/zaptel.conf:

loadzone=de
defaultzone=de
span=1,1,3,ccs,ami
bchan=1-2
dchan=3
span=2,1,3,ccs,ami
bchan=4-5
dchan=6

/etc/asterisk/zapata.conf:

[channels]
switchtype = euroisdn
signalling = bri_cpe_ptmp
priindication = outofband
usecallerid = yes
overlapdial = no
immediate = no
group = 2
context = mz
channel => 4-5

switchtype = euroisdn
signalling = bri_cpe_ptmp
usecallerid = yes
overlapdial = no
immediate = no
group = 1
context = remote
channel => 1-2

asterisk*CLI> zap show status
Description Alarms IRQ bpviol CRC4
HFC-S PCI A ISDN card 0 [TE] layer 1 AC· OK 0 0 0
HFC-S PCI A ISDN card 1 [TE] layer 1 AC· OK 0 0 0

asterisk*CLI> zap show channels
Chan Extension Context Language MusicOnHold
pseudo mz de
1 remote de
2 remote de
4 mz de
5 mz de

Bei der Auswahl passiert folgendes:
-- Executing SetCallerID("SIP/48-e3d5", "xxxxx") in new stack
-- Executing Dial("SIP/48-e3d5", "Zap/G1/yyyyy") in new stack
-- Requested transfer capability: 0x00 - SPEECH
-- Called G1/yyyyy
-- Channel 0/2, span 1 got hangup, cause 42
-- Zap/2-1 is circuit-busy
-- Hungup 'Zap/2-1'
== Everyone is busy/congested at this time (1:0/1/0)
-- Executing Dial("SIP/48-e3d5", "Zap/G2/0yyyyy") in new stack
-- Requested transfer capability: 0x00 - SPEECH
-- Called G2/0yyyyy
-- Zap/5-1 is ringing
-- Hungup 'Zap/5-1'
== Spawn extension (default, 0yyyyy, 3) exited non-zero on 'SIP/48-e3d5'

Und immer wieder habe ich seitenweise
== Primary D-Channel on span 1 up for TEI 75

Was läuft falsch, was fehlt euch noch?