Glossary -17
SES
Severely Errored Seconds
SF
Superframe, a T1 framing format consisting of 12 frames. Also known as D4 framing.
SLC Subscriber Loop Carrier, a Digital Loop Carrier (DLC).
SLIP
Serial Line Internet Protocol
SMDS
Switched Multi-megabit Data Service
SNMP
Simple Network Management Protocol
SONET
Synchronous Optical Network
SRU port
Subrate Unit port (one of the data ports for this system).
system
Often used as a synonym for the integrated access system.
TA
Terminal Adapter
TE
Terminal Equipment
T1
The North American DS1 transmission rate, 1.544 Mbps.
TAD
Test Access Digroup
