Sierra Wireless DART 200 CDPD Modem - Manual (Page 187)

DART 200 CDPD Modem User’s Guide Glossary
PN1197-00 Revision 1.0 Glossary-7
SIE Symbols In Error
Count of how many 6-bit symbols (used by the FEC to
organize the data stream) were in error in the last data
block. See also, FEC.
SIM Subscriber Identity Module.
The part of the modem containing the IP Address and
authentication credentials
SLIP Serial Line Internet Protocol
The original alternative communications protocol used
between computers, or between computers and routers on
the Internet. See also, PPP.
In CDPD the modem will operate in SLIP mode when the
TCP stack function is provided by software rather than
the modem.
SPI Service Provider Identifier
An alternate identifier for a CDPD service provider. Can
be used for special services or billing purposes (CDPD
1.1 only).
SPNI Service Provider Network Identifier
A unique numeric code used to identify the CDPD service
provider.
SNDCP Subnetwork Dependent Convergence Protocol
Operates between the MDLP and IP layers. Provides
compression, encryption, and segmenting functions.
SNMP Simplified Network Management Protocol
Permits remote monitoring and control of communication
devices.
SU Subscriber Unit
This refers to the DART as a component in the CDPD
network
TCP Transmission Control Protocol.
A guaranteed packet delivery Internet protocol that is
built on (uses) Internet Protocol (IP) as a base. Often
referred to as TCP/IP
TEI Temporary Equipment Identifier
A data link layer frame address that identifies a specific
M-ES as the source or destination.
TNC An RF connector type commonly used with the coaxial
cables on cellular antennas
TXD Transmitted Data. One of the RS-232 data lines