Alcatel Speed Touch 591s, Technical User'S Manual

Page: 174 / 184

Glossary
GL-6 Speed Touch 591s Technical Practices
90-8785-01 February 2001
RAI remote alarm indication
An RAI is a code sent upstream in a network as a notification that a failure
condition has been declared downstream. Also known as AIS or Yellow
Alarm.
RBS robbed bit signaling
RBI is a signaling technique used in T1 which steals the least significant bit
of a channel every few frames to use as a signaling bit.
RDI remote defect indication
An RDI is an alarm sent to the transmitting node by the receiving node to
indicate an incoming failure at the receiving node. This error is caused by
faulty local hardware, a faulty transmit connection or cable, or a faulty
remote receiver.
RTS request to send
RTS is a V.24 control signal on a standard EIA/TIA-232-C connector. RTS
places the modem in the originate mode so that it can begin to send.
Rx receive
SAR segmentation and reassembly
SCT severe congestion threshold
SDSL symmetric digital subscriber line
SDSL is a DSL technology that allows symmetric speeds of up to E1/T1
over a single twisted pair.
SDT structured data transfer
SHDSL symmetric high-speed digital subscriber line
SEEP serial electrically erasable PROM
SEEP is the memory used to store and report product identity and other
long-lasting information about hardware assembly.
ST Speed Touch
TCA threshold crossing alert
TCA profiles are used by the system to combine several statistics counters.
When a user-defined threshold for any one of the statistics in the profile has
been exceeded, an alarm is generated. Several statistics counters can
therefore be monitored using a single profile.
Telco telephone company
TIA/EIA Telecommunications Industry Association/Electronics Industries Alliance
TM test mode
Tx transmit