Hi,I can't understand mtp3d exactlyI'm trying a similar configuration 4 asteriskbox for testingEach box has 4E1 box1 - signaling link1 connectbox2 signaling link1 other ports is empty voicebox1 - only voice link1 and link2 connect voicebox2 -only voice link1 and link2 Box1 ----crosscable-- -- Box2 Voicebox1 ----crosscable---- Voicebox2 box 1 and box 2 signaling between runing mtp3d both. voicebox1 connect box1 with schannel => 16 at box1.r:12000voicebox2 connect box2 with schannel => 16 at box2.r:12000 voicebox1 and voicebox2 call connect, signaling ok box1 and box2 ,voice is ok on link1 but link2 never communicate. It's only idle reset pending. If I get it activated Link2 on box1 and box2 then voiceboxes Link2 is IDLE and call connect. If signaling boxes up 63 CIC , it's runing. if 31 CIC is up voicebox only 31 CIC communicate :) Is it bad to this scheme? Why voicebox looking at the number of the signalboxes CIC ? How can I separate ? Thanks. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-ss7/attachments/20130405/1708e43e/attachment.htm>