Hi guys, Having some problems installing the new TDM2400P card here. It is replacing a TDM400P which was working fine a few hours ago. Old TDM400 had 4 FXS modules - new TDM2400 has 2 4 FXS modules installed. Asterisk seems to detect all the ports fine, and I can't see any error messages, however when I pick up the handset on that port, I don't get a dial tone. Normally if I pick up a handset, the Asterisk console reports something like 'Starting simple switch on ZAP/1/1', but it seems that Asterisk can't detect the phone going off-hook. The machine has a Sangoma A101 card which is working fine. I've also resolved an IRQ conflict which I wasn't aware of previously, but that didn't seem to make a difference. The molex power connection is plugged in. My zapata.conf: fxoks=1-8 loadzone = au defaultzone=au zaptel.conf (extract): [channels] context=default ;Config for TDM2400 with 2x4 port FXS modules usecallerid=yes hidecallerid=no immediate=no signalling=fxo_ks echocancel=yes echocancelwhenbridged=yes group=1 channel => 1-8 ztcfg -vv: Zaptel Configuration ====================== SPAN 1: CCS/HDB3 Build-out: 0 db (CSU)/0-133 feet (DSX-1) Channel map: Channel 01: FXO Kewlstart (Default) (Slaves: 01) Channel 02: FXO Kewlstart (Default) (Slaves: 02) Channel 03: FXO Kewlstart (Default) (Slaves: 03) Channel 04: FXO Kewlstart (Default) (Slaves: 04) Channel 05: FXO Kewlstart (Default) (Slaves: 05) Channel 06: FXO Kewlstart (Default) (Slaves: 06) Channel 07: FXO Kewlstart (Default) (Slaves: 07) Channel 08: FXO Kewlstart (Default) (Slaves: 08) Channel 25: Clear channel (Default) (Slaves: 25) Channel 26: Clear channel (Default) (Slaves: 26) Channel 27: Clear channel (Default) (Slaves: 27) Channel 28: Clear channel (Default) (Slaves: 28) Channel 29: Clear channel (Default) (Slaves: 29) Channel 30: Clear channel (Default) (Slaves: 30) Channel 31: Clear channel (Default) (Slaves: 31) Channel 32: Clear channel (Default) (Slaves: 32) Channel 33: Clear channel (Default) (Slaves: 33) Channel 34: Clear channel (Default) (Slaves: 34) Channel 35: Clear channel (Default) (Slaves: 35) Channel 36: Clear channel (Default) (Slaves: 36) Channel 37: Clear channel (Default) (Slaves: 37) Channel 38: Clear channel (Default) (Slaves: 38) Channel 39: Clear channel (Default) (Slaves: 39) Channel 40: D-channel (Default) (Slaves: 40) Channel 41: Clear channel (Default) (Slaves: 41) Channel 42: Clear channel (Default) (Slaves: 42) Channel 43: Clear channel (Default) (Slaves: 43) Channel 44: Clear channel (Default) (Slaves: 44) Channel 45: Clear channel (Default) (Slaves: 45) Channel 46: Clear channel (Default) (Slaves: 46) Channel 47: Clear channel (Default) (Slaves: 47) Channel 48: Clear channel (Default) (Slaves: 48) Channel 49: Clear channel (Default) (Slaves: 49) Channel 50: Clear channel (Default) (Slaves: 50) Channel 51: Clear channel (Default) (Slaves: 51) Channel 52: Clear channel (Default) (Slaves: 52) Channel 53: Clear channel (Default) (Slaves: 53) Channel 54: Clear channel (Default) (Slaves: 54) Channel 55: Clear channel (Default) (Slaves: 55) 39 channels configured. zap show status: cv-server*CLI> zap show status Description Alarms IRQ bpviol CRC4 Wildcard TDM2400P Prototype Board 1 OK 13 0 0 wanpipe1 card 0 OK 0 0 0 When I try to dial an internal extension, the console shows the following: -- Accepting call from '421115677' to '92515481' on channel 0/1, span 2 -- Executing Dial("Zap/25-1", "Zap/1/1|60") in new stack -- Called 1/1 -- Channel 0/1, span 2 got hangup request -- Hungup 'Zap/1-1' == Spawn extension (from-onramp, 92515481, 1) exited non-zero on 'Zap/25-1' -- Hungup 'Zap/25-1' zap show channel 1: (with handset off-hook). cv-server*CLI> zap show channel 1 Channel: 1CLI> File Descriptor: 20 Span: 1 Extension: Dialing: no Context: default Caller ID: Calling TON: 0 Caller ID name: Destroy: 0 InAlarm: 0 Signalling Type: FXO Kewlstart Radio: 0 Owner: Real: Callwait: Threeway: Confno: -1 Propagated Conference: -1 Real in conference: 0 DSP: no Relax DTMF: no Dialing/CallwaitCAS: 0/0 Default law: ulaw Fax Handled: no Pulse phone: no Echo Cancellation: 128 taps, currently OFF Actual Confinfo: Num/0, Mode/0x0000 Actual Confmute: No Hookstate (FXS only): Onhook I've also got the same result on the second FXS module - so it's not one faulty module as far as I can see. Any help is much appreciated - I'm going to rollback these changes now, and get some sleep. My gut feeling is that somehow the modules aren't being powered up properly (they're in slots 1 and 2).