hi, two questions

FATAL: Error inserting mISDN_l1 (/lib/modules/2.6.24-24-server/extra/mISDN_l1.ko): Unknown symbol in module, or unknown parameter (see dmesg)

mISDN_l1 i part of mISDN version 1. why do you load it? is it because your hfcmulti module is also version 1? just remove all extra (mISDN-)modules and re-install mISDN.

is any body using Sangoma E1 card ?

does it have an HFC-E1 chipset? maybe you should enable init-debugging: modprobe hfcmulti debug=0x40000 in case it loads, see dmesg if it is detected. also do "lspci -nv" to see device ids. regards, andreas