"Access information discarded" in 5.1-Release

[Markus D.]

Hello,

since I use Freebsd 5.1-RELASE with my isdn gateway,I always get an "access
information discarded" on the first dial attempt (with rbch/ppp as well as
with ippp). The second dial attempt completes and tun/isp is established.

Following is a isdntrace of a connection setup:
##### start #####

-- TE->NT - unit:0 - frame:000061 - time:12.12 00:06:28.407157 - length:91
-----
Dump:004  08 01 3d 05 a1 04 02 88 90 18 01 83 6c 08 81 38      
..=.........l..8
Dump:020  38 36 38 39 30 37 6d 16 80 bf d6 93 17 28 18 76      
868907m......(.v
Dump:036  1a 28 03 82 06 08 68 fb bf bf 92 80 05 08 70 08      
.(....h.......p.
Dump:052  81 30 31 39 32 30 37 31 71 1d 80 9b 16 28 02 fd      
.0192071q....(..
Dump:068  18 28 40 2a 1a 28 28 fb bf bf 54 56 19 28 a0 3e      
.(@*.((...TV.(.>
Dump:084  38 38 36 38 39 30 37                                  8868907
Q931: pd=Q.931/I.451, cr=0x3d (from origination), message=SETUP: 
     [sending complete]
     [bearer capability: 
          cap=unrestricted digital information
          std=CCITT
          rate=64 kbit/s
          mode=circuit]
     [channel id: channel=any channel (preferred)]
     [calling party number: 8868907 (type=unknown, plan=ISDN)]
     [calling party subaddress: LEN=0x16, DATA=0x80 0xbf 0xd6 0x93 0x17 0x28
0x18 0x76 0x1a 0x28 0x03 0x82 0x06 0x08 0x68 0xfb 0xbf 0xbf 0x92 0x80 0x05
0x08 ]
     [called party number: 0192071 (type=unknown, plan=ISDN)]
     [called party subaddress: LEN=0x1d, DATA=0x80 0x9b 0x16 0x28 0x02 0xfd
0x18 0x28 0x40 0x2a 0x1a 0x28 0x28 0xfb 0xbf 0xbf 0x54 0x56 0x19 0x28 0xa0
0x3e 0x38 0x38 0x36 0x38 0x39 0x30 0x37 ]

-- NT->TE - unit:0 - frame:000063 - time:12.12 00:06:28.597156 - length:15
-----
Dump:004  08 01 bd 7d 08 02 82 ab 14 01 01                      ...}.......
Q931: pd=Q.931/I.451, cr=0x3d (from destination), message=STATUS: 
     [cause: 43: Access information discarded (Q.850) 
          (location=public network serving local user, std=CCITT)]
     [call state: Std=CCITT, State=Call initiated]

-- TE->NT - unit:0 - frame:000064 - time:12.12 00:06:28.597156 - length:12
-----
Dump:004  08 01 3d 45 08 02 80 e5                               ..=E....
Q931: pd=Q.931/I.451, cr=0x3d (from origination), message=DISCONNECT: 
     [cause: 101: Message not compatible with call state (Q.850) 
          (location=user, std=CCITT)]

-- NT->TE - unit:0 - frame:000066 - time:12.12 00:06:29.187165 - length:8
------
Dump:004  08 01 bd 4d                                           ...M
Q931: pd=Q.931/I.451, cr=0x3d (from destination), message=RELEASE: 

-- TE->NT - unit:0 - frame:000067 - time:12.12 00:06:29.187165 - length:8
------
Dump:004  08 01 3d 5a                                           ..=Z--
TE->NT - unit:0 - frame:000070 - time:12.12 00:06:34.237241 - length:56 -----
Dump:004  08 01 09 05 a1 04 02 88 90 18 01 83 6c 08 81 38      
............l..8
Dump:020  38 36 38 39 30 37 6d 0b 80 bf 3d 68 05 08 40 43      
868907m...=h.. at C
Dump:036  07 08 02 70 08 81 30 31 39 32 30 37 31 71 05 80      
...p..0192071q..
Dump:052  d2 05 08 40                                           ...@
Q931: pd=Q.931/I.451, cr=0x09 (from origination), message=SETUP: 
     [sending complete]
     [bearer capability: 
          cap=unrestricted digital information
          std=CCITT
          rate=64 kbit/s
          mode=circuit]
     [channel id: channel=any channel (preferred)]
     [calling party number: 8868907 (type=unknown, plan=ISDN)]
     [calling party subaddress: LEN=0x0b, DATA=0x80 0xbf 0x3d 0x68 0x05 0x08
0x40 0x43 0x07 0x08 0x02 ]
     [called party number: 0192071 (type=unknown, plan=ISDN)]
     [called party subaddress: LEN=0x05, DATA=0x80 0xd2 0x05 0x08 0x40 ]

-- NT->TE - unit:0 - frame:000072 - time:12.12 00:06:34.517245 - length:11
-----
Dump:004  08 01 89 02 18 01 89                                  .......
Q931: pd=Q.931/I.451, cr=0x09 (from destination), message=CALL PROCEEDING: 
     [channel id: channel=B-1 (exclusive)]

-- NT->TE - unit:0 - frame:000074 - time:12.12 00:06:35.057253 - length:15
-----
Dump:004  08 01 89 07 29 05 03 0c 0c 00 06                      ....)......
Q931: pd=Q.931/I.451, cr=0x09 (from destination), message=CONNECT: 
     [date/time: 12.12.03 00:06]

-- TE->NT - unit:0 - frame:000075 - time:12.12 00:06:35.057253 - length:8
------
Dump:004  08 01 09 0f                                           ....
Q931: pd=Q.931/I.451, cr=0x09 (from origination), message=CONNECT
ACKNOWLEDGE: 

Q931: pd=Q.931/I.451, cr=0x3d (from origination), message=RELEASE COMPLETE: 

##### end #####

As I can see, the calling and called party subaddress contains some extra
infomation in the first setup message. I'm not familiar with isdn. What is
this? Can I configure this?

BTW: The ISP is German Arcor.

Thanks
Markus