Hi Russ, I rebooted the machine loading dahdi_dummy in /etc/modules before the /etc/init.d/dahdi.
Now dahdi_test shows a nearly perfect score: # dahdi_test Opened pseudo dahdi interface, measuring accuracy... 99.998% 99.990% 99.998% 99.996% 99.998% 99.998% 99.997% 99.997% 99.998% 99.997% 99.998% 99.997% 99.998% 99.998% 99.997% 99.998% 99.997% 99.997% 99.997% 99.998% 99.997% 99.998% 99.998% 99.997% ^C --- Results after 24 passes --- Best: 99.998% -- Worst: 99.990% -- Average: 99.997188% Cummulative Accuracy (not per pass): 99.997 When I connect a live E1 to the card it does work but I get a fair number of: [May 15 15:10:39] NOTICE[4017] chan_dahdi.c: PRI got event: HDLC Bad FCS (8) on D-channel of span 1 [May 15 15:10:42] NOTICE[4017] chan_dahdi.c: PRI got event: HDLC Bad FCS (8) on D-channel of span 1 [May 15 15:10:43] NOTICE[4017] chan_dahdi.c: PRI got event: HDLC Bad FCS (8) on D-channel of span 1 [May 15 15:10:43] NOTICE[4017] chan_dahdi.c: PRI got event: HDLC Bad FCS (8) on D-channel of span 1 [May 15 15:10:43] NOTICE[4017] chan_dahdi.c: PRI got event: HDLC Bad FCS (8) on D-channel of span 1 [May 15 15:10:45] NOTICE[4017] chan_dahdi.c: PRI got event: HDLC Bad FCS (8) on D-channel of span 1 [May 15 15:11:01] NOTICE[4017] chan_dahdi.c: PRI got event: HDLC Bad FCS (8) on D-channel of span 1 [May 15 15:11:01] NOTICE[4017] chan_dahdi.c: PRI got event: HDLC Bad FCS (8) on D-channel of span 1 [May 15 15:11:06] NOTICE[4017] chan_dahdi.c: PRI got event: HDLC Bad FCS (8) on D-channel of span 1 [May 15 15:11:12] NOTICE[4017] chan_dahdi.c: PRI got event: HDLC Bad FCS (8) on D-channel of span 1 [May 15 15:11:12] NOTICE[4017] chan_dahdi.c: PRI got event: HDLC Bad FCS (8) on D-channel of span 1 [May 15 15:11:12] NOTICE[4017] chan_dahdi.c: PRI got event: HDLC Bad FCS (8) on D-channel of span 1 [May 15 15:11:13] NOTICE[4017] chan_dahdi.c: PRI got event: HDLC Bad FCS (8) on D-channel of span 1 Resulting in: [May 15 15:10:34] NOTICE[4017] chan_dahdi.c: PRI got event: Alarm (4) on D-channel of span 1 [May 15 15:10:39] NOTICE[4017] chan_dahdi.c: PRI got event: Alarm (4) on D-channel of span 1 [May 15 15:10:43] NOTICE[4017] chan_dahdi.c: PRI got event: Alarm (4) on D-channel of span 1 [May 15 15:10:44] NOTICE[4017] chan_dahdi.c: PRI got event: Alarm (4) on D-channel of span 1 [May 15 15:10:45] NOTICE[4017] chan_dahdi.c: PRI got event: Alarm (4) on D-channel of span 1 [May 15 15:11:13] NOTICE[4017] chan_dahdi.c: PRI got event: Alarm (4) on D-channel of span 1 [May 15 15:11:17] NOTICE[4017] chan_dahdi.c: PRI got event: Alarm (4) on D-channel of span 1 [May 15 15:11:22] NOTICE[4017] chan_dahdi.c: PRI got event: Alarm (4) on D-channel of span 1 Not usable in production but getting a lot closer. Is there anything else that can be done to improve this ? Best regards, Mike -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users