referred to as a private branch exchange (pbx), when it has connections to the public switched telephone network . a pbx is installed in enterprise facilities, typically near large office spaces or within an organizational campus to serve the organization's telephones and any private leased line circuits...
and digital circuits laboratory ecen instrumentation and computation lab ecen instrumentation and computation lab ecen basic circuit theory ecen basic circuit theory ecen signals and systems ecen intermediate laboratory ecen intermediate laboratory ecen digital circuit design ecen electromagnetic fields...
were different. this meant that each circuit was actually operating at a slightly different rate and with different phase. sonet/sdh allowed for the simultaneous transport of many different circuits of differing origin within a single framing protocol. sonet/sdh is not a complete communications protocol...
were different. this meant that each circuit was actually operating at a slightly different rate and with different phase. sonet/sdh allowed for the simultaneous transport of many different circuits of differing origin within a single framing protocol. sonet/sdh is not a complete communications protocol...