Hello All We have a small TC1000 set up with 1 NMC, 1 ARC and three E1 DSP cards. Had been working fine for over a year till it was affected by a lightning strike which burnt connected network cables and took out the NMC and one DSP. After replacement of damaged cards, everything seems to be working fine but the DSPs are not accepting calls. Telco says busy signs are a result of faulty DSPs but they were tested ok on a different site. The entire chassis was changed with a spare yet the busy tones persist even when there is no one connected. We urgently need help! New chassis is populated with old cards and I am wondering if a software upgrade will have an effect. ARC ver 4.1.13, NMC ver 6.2.17, DSP ver 3.5.13 Thanks. 'Tunde Popoola Crowther Communications, Abuja , Nigeria. 234- 9 -5240496 234- 802- 3420161 (mobile) _________________________________________________________________ Express yourself instantly with MSN Messenger! Download today - it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/