Hi, MFC R2 - UniCall implementation. The * is configured to send a 1101 Idle signal: zaptel.conf span=3,1,0,cas,hdb3 # cas=9-23:1101 cas=25-39:1101 But is sending 1001 Idle signal Can anyone send me a tip?????? Jun 20 19:06:56 WARNING[24118]: chan_unicall.c:704 unicall_report: MFC/R2 UniCall/12 1001 -> [1/40000000/Idle /Idle ] Jun 20 19:06:56 WARNING[24118]: chan_unicall.c:704 unicall_report: MFC/R2 UniCall/12 <- 1011 [1/40000000/Idle /Idle ] Jun 20 19:06:56 WARNING[24118]: chan_unicall.c:704 unicall_report: MFC/R2 UniCall/12 R2 prot. err. [1/40000000/Idle /Idle ] cause 32773 Jun 20 19:06:56 WARNING[24118]: chan_unicall.c:704 unicall_report: MFC/R2 UniCall/12 1001 -> [1/40000000/Idle /Idle ] Jun 20 19:06:56 WARNING[24118]: chan_unicall.c:2865 handle_uc_event: Unicall/12 event Protocol failure -- Unicall/12 protocol error. Cause 32773