We have ISDN PCI Adapter from Billion(using mISDN). When we connect it to the PSTN the incoming calls are OK. When we try to make a call we can't do that because the ISDN port is Down: CLI> misdn show port 1 BEGIN STACK_LIST: * Stack Addr: 40400001 Port 1 Type TE Prot. PMP L2Link DOWN L1Link:DOWN Idx: 0 stack->chan: 0 Chan 1 InUse:0 Idx: 1 stack->chan: 0 Chan 2 InUse:0 When we try to up manually we have the following: misdn port up 1 NO BC FOR STACK: port:1 TE_FRM_HANDLER: Returning 0 on prim:20382 port:1 Unhandled Message: prim 20382 len 0 from addr 41400001, dinfo 2 on port: 1 How can estabilish the ISDN port to Up ?