An interface,5, wherein the means for locating an idle switched port include {HEAD ~ means} for differentiating between {TAIL ~ 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 
for differentiating between
An interface,5 , wherein the means for locating an idle switched port include { HEAD ~ means } for differentiating between { TAIL ~ 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
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL REL 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