Hi all, I thought this may be useful information for the Brits reading this list:
I installed a * box (one ZapHFC BRI) for a customer last week and noticed the following warning every fifty seconds: == Primary D-Channel on span 1 down Dec 6 17:31:19 WARNING[213005]: chan_zap.c:1989 pri_find_dchan: No D-channels available! Using Primary on channel anyway 3! == Primary D-Channel on span 1 up Today the machine started having all sorts of problems TEI requests etc. and wouldn't make/receive calls. A reboot sorted that out, but I decided to contact BT to see if the D channel going up and down is a problem. It turns out that this is perfectly normal and the ETSI ISDN specification doesn't state that the D channel has to be permanently up or down. Apparently, there are two kinds of exchanges: System Y exchange (AXE10) - Thorn/Ericsson Layer 2 (D channel) drops every 50 seconds System X exchange - Marconi Layer two stays active permanently So, if you see this warning, you know what the problem is (or rather that there isn't a problem!). Cheers, Nick. _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
