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Andreas.Eversberg Andreas.Eversberg at versatel.de>> output of "misdn_info" >Found 2 ports > Port 0 'mISDN_l1loop.1': TE/NT-mode PRI E1 (for phone lines & E1 devices) > 30 B-channels: 1-15 17-31 > B-protocols: RAW HDLC X75slp > -------- > Port 1 'mISDN_l1loop.2': TE/NT-mode PRI E1 (for phone lines & E1 devices) > 30 B-channels: 1-15 17-31 > B-protocols: RAW HDLC X75slp hi fabrice, the mISDN_l1loop interfaces are used to bring audio channels from the BTS into the kernel (mISDN driver). there they can be connected to other ISDN ports or used by chan_lcr (asterisk channel driver). both interfaces are used by the [GSM] interface. (see gsm.conf) there are two interfaces: one is for the BTS side and the other for the chan_lcr (asterisk) side. since you have no physical interface, i assume that you want to use asterisk in combination with chan_lcr. but you also have [Int] and [Ext] interfaces defined. you may only use them if you actually have physical interfaces. what happens here: the given port numbers 0 and 1 match you virtual l1loop interfaces, which are already in use for [GSM] interface. unless you don't have physical cards, remove them. (interface.conf) now you may route all call from the GSM interface (or any interface to the chan_lcr: see routing.conf [main] : remote application=asterisk and from asterisk to lcr: Dial(LCR/GSM/<extension from hlr>[/<options>]) try a test first: [main] : test prefix=5 and you should hear music... regards, andreas p.s. i think we may require a howto. also i think i must put some 'working' packages together at one point to download. sometimes api changes a bit, so always latest packets may not work together.