The time slot interchange capabilities of modern digital loop carriers are utilized
to provide direct connectivity from the calling modem's line to an internet access
modem bank through the digital loop carrier, thereby bypassing the local central
end office. A call which is to a telephone number of an internet access provider's
modem is routed to a bypass initiator. If the bypass initiator detects that the
call is from a number which is serviced by a digital loop carrier having a local
central end office bypass capability, then the bypass initiator issues a bypass
command. The digital loop carrier establishes the bypass connection, but does not
break the signaling connection on the initial call which was routed from the digital
loop carrier through the local central end office to the bypass initiator. Once
the bypass connection has been established, the bypass initiator sends a disconnect
signal through the signaling connection of the initial call. The local central
end office performs the permanent signal treatment procedures, resulting in the
calling modem's line being placed in the permanent signal state at the local central
end office, so that the telephone system will know that the calling modem's line
is unavailable for incoming calls. When the bypass connection is complete at the
end of the internet session, the calling modem's line goes on hook and is reported
to the local central end office in the conventional manner.