>p pppppppppp NORTHERN TELECOM Q931 FRAME SELECTIONf  Level 3 Selection   -  Protocol discriminator 08x   Cal reference value Xd   CAL ESTAB MSG: ALERTing Y   CAL PROCed Y   CONect Y   CONect ACK Y   PROGres Y   SETUP Y   SETUP ACK Y   CAL DISTAB MSG: DISConect Y   RELease Y   RELease COMplete Y   MISC MSG: STATus Y   INFOrmation Y   - - *Only Q.931 Protocol Discriminator 08x is suported by NT ISDN!1Q921 2Q931 3INFO 4X25 5AL Y 6AL N 7TR OF 8 9 10EXIT