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Glossary 371
Installation and Maintenance Guide
Routing
The path a message takes from its origin to its destination on a network or the Internet.
Serial port
A port that sends and receives data one bit at a time.
Software keycode
Refer to Keycode.
static IP address
A static or fixed IP address that is permanently assigned to a computer.
Station Auxiliary Power Supply (SAPS)
A device which provides power to a telephone that is more than 300 m (975 ft.) and less
than 1200 m (3900 ft.) from the server, or to a CAP module.
Station media bay module
Physical units installed in a Business Communications Manager that connect the
telephone lines to the system.
subnet mask
A value used to route packets on TCP/IP networks. When the IP layer has to deliver a
packet through an interface, it uses the destination address contained in the packet,
together with the subnet mask of the interface to select an interface, and the next hop in
that subnet
Synchronous
A synchronous signal is sourced from the same timing reference. A synchronous signal
causes the interval between successive bits, characters, or events to remain constant or
locked in to a specific clock frequency.
System speed dial code
A two-digit code (01 to 70) that you program to dial a telephone number a maximum of 24
digits long. You can program System speed dial codes for the complete system under the
System Speed heading.
SSD
The SSD (system status display) is a LED interface used to visually monitor the status of
system components.
SSM
The SSM (system status monitor) is a graphical user interface used to monitor, on-line, the
status of Business Communications Manager system components.
T1
Digital carrier system or line that carries data at 1.544 Mb/s.