ocr: SNALINK NODE Open (LINK) Request incoming call A Open (LINK) OK Response A Open (LINK) Request incoming call B Open (LINK) OK Response B Wait for station to call in HOST SNALINK NODE XID Request-Open-station (XID) A Send-XID A XID activate station A as before Close (LINK) Request B Close (LINK) B Response open (LINK) Request outgoing call C XID open (LINK) OK Response -
