if (p_m_mISDNport->b_state[p_m_b_index] != B_STATE_IDLE)
bchannel_event(p_m_mISDNport, p_m_b_index, B_EVENT_DROP, 0);
p_m_mISDNport->b_port[p_m_b_index] = NULL;
if (p_m_mISDNport->b_state[p_m_b_index] != B_STATE_IDLE)
bchannel_event(p_m_mISDNport, p_m_b_index, B_EVENT_DROP, 0);
p_m_mISDNport->b_port[p_m_b_index] = NULL;