ISDN_P_B_L2DSP
if (crq->protocol != ISDN_P_B_L2DSP
if (crq->protocol == ISDN_P_B_L2DSP) {
.Bprotocols = (1 << (ISDN_P_B_L2DSP & ISDN_P_B_MASK))
case ISDN_P_B_L2DSP:
case ISDN_P_B_L2DSP:
case ISDN_P_B_L2DSP: