{HEAD ~ An interface,5}, wherein {TAIL ~ the means} for locating an idle switched port include means for differentiating between ports set for incoming and outgoing switched calls through the gateway, and between remote procedure calls requesting incoming and outgoing switched calls through the gateway 
{ HEAD ~ An interface,5 } , wherein { TAIL ~ the means } for locating an idle switched port include means for differentiating between ports set for incoming and outgoing switched calls through the gateway , and between remote procedure calls requesting incoming and outgoing switched calls through the gateway
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH