I am having trouble with ISDN: after starting the card (rci4l start) I saw message about IRQ. (see below). After that, when a client made a request, the card started calling out. This gave messages about ISAC XDU no skb. pinging is very slow (sometimes 10 seconds for a ping to come back) and I also saw some message about dialstate 0, and an error E001B (?) Where to search for the troubles? TIA Leen Nov 30 14:03:11 linux kernel: HiSax: Total 1 card defined Nov 30 14:03:11 linux kernel: HiSax: Card 1 Protocol EDSS1 Id=HiSax (0) Nov 30 14:03:11 linux kernel: HiSax: Teles IO driver Rev. 2.17 Nov 30 14:03:11 linux kernel: HiSax: Teles 16.3 config irq:10 isac:0x980 cfg:0xD80 Nov 30 14:03:11 linux kernel: HiSax: hscx A:0x180 hscx B:0x580 Nov 30 14:03:11 linux kernel: Teles3: ISAC version (0): 2086/2186 V1.1 Nov 30 14:03:11 linux kernel: Teles3: HSCX version A: V2.1 B: V2.1 Nov 30 14:03:11 linux kernel: Teles 16.3: IRQ 10 count 0 Nov 30 14:03:11 linux kernel: Teles 16.3: IRQ 10 count 0 Nov 30 14:03:11 linux kernel: Teles 16.3: IRQ(10) getting no interrupts during init 1 Nov 30 14:03:11 linux kernel: Teles 16.3: IRQ 10 count 2 Nov 30 14:03:11 linux kernel: HiSax: DSS1 Rev. 2.30 Nov 30 14:03:11 linux kernel: HiSax: 2 channels added Nov 30 14:03:11 linux kernel: HiSax: MAX_WAITING_CALLS added Nov 30 14:03:11 linux kernel: HiSax: debugging flags card 1 set to 4 Nov 30 14:03:11 linux isdnlog: isdnlog Version 4.29 starting Nov 30 14:03:11 linux isdnlog: Holiday Version 1.10-Germany [12-Apr-1999] loaded [11 entries from /usr/lib/isdn/holiday-de.dat] Nov 30 14:03:11 linux isdnlog: Dest V1.00: File '/usr/lib/isdn/dest.gdbm' opened fine - (+h) AT CH DE NL US Nov 30 14:03:11 linux isdnlog: Zone V1.24: Provider 24 File '/usr/lib/isdn/zone-de-dtag.gdbm' opened fine - V1.21 K2 C2 N256 T157192 O1 L5 Nov 30 14:03:12 linux isdnlog: Rates Version 1.10-Germany [20-Jun-2000 19:59:30] loaded [196 Providers, 5713 Zones, 17791 Areas, 17829 Specials, 46 Services, 1056 Comments, 0 eXceptions, 14902 Rates from /usr/lib/isdn/rate-de.dat] Nov 30 14:03:12 linux isdnlog: (ISDN subsystem with ISDN_MAX_CHANNELS > 16 detected - 2 active channels, 2 MSN/SI entries) Nov 30 14:03:12 linux isdnlog: (Data versions: iprofd=0x06 net_cfg=0x06 /dev/isdninfo=0x01) Nov 30 14:04:10 linux modprobe: modprobe: Can't locate module ippp0 Nov 30 14:04:10 linux kernel: isdn: Verbose-Level is 3 Nov 30 14:04:10 linux ipppd[850]: Found 1 device: /dev/ippp0 Nov 30 14:04:10 linux ipppd[855]: ipppd i2.2.11 (isdn4linux version of pppd by MH) started Nov 30 14:04:10 linux ipppd[855]: init_unit: 0 Nov 30 14:04:10 linux kernel: ippp, open, slot: 0, minor: 0, state: 0000 Nov 30 14:04:10 linux ipppd[855]: Connect[0]: /dev/ippp0, fd: 8 Nov 30 14:04:10 linux kernel: ippp_ccp: allocated reset data structure cadd7800 Nov 30 14:08:41 linux kernel: OPEN: 192.168.0.100 -> 212.115.192.193 ICMP Nov 30 14:08:41 linux kernel: ippp0: dialing 1 0184496166... Nov 30 14:08:42 linux isdnlog: (HiSax driver detected) Nov 30 14:08:42 linux isdnlog: Nov 30 14:08:42 * tei 65 calling 0184496166 with +31 184/420518, Sliedrecht RING (Data) Nov 30 14:08:42 linux kernel: HiSax: ISAC XDU Nov 30 14:08:42 linux kernel: HiSax: ISAC XDU no skb Nov 30 14:08:43 linux isdnlog: Nov 30 14:08:43 * tei 65 calling 0184496166 with +31 184/420518, Sliedrecht RING (Data) Nov 30 14:08:43 linux kernel: HiSax: ISAC XDU Nov 30 14:08:43 linux kernel: HiSax: ISAC XDU no skb Nov 30 14:08:44 linux isdnlog: Nov 30 14:08:44 * tei 65 calling 0184496166 with +31 184/420518, Sliedrecht RING (Data) Nov 30 14:08:44 linux kernel: HiSax: ISAC XDU Nov 30 14:08:44 linux kernel: HiSax: ISAC XDU no skb Nov 30 14:08:45 linux isdnlog: Nov 30 14:08:45 * tei 65 calling 0184496166 with +31 184/420518, Sliedrecht RING (Data) Nov 30 14:08:46 linux kernel: HiSax: ISAC XDU Nov 30 14:08:46 linux kernel: HiSax: ISAC XDU no skb Nov 30 14:08:47 linux isdnlog: ... and so on.