IX
ATU-C
ADSL Transmission Unit—central office.
ATU-R
ADSL Transmission Unit—remote.
BAS
Broadband Access Server. Device within the ADSL POP terminating PPP
sessions providing access to routing or service selection. Can be the same
hardware platform as the LAC.
BRAS
Broadband Remote Access Server. Device that terminates remote users at the
corporate network or Internet users at the Internet Service Provider (ISP) network,
such as the NetSpeed FireRunner product that provides firewall, authentication,
and routing services for remote users.
Community Name
An identification used by an SNMP manager to grant an SNMP server access
rights to a MIB.
CPE
Customer premises equipment. Terminating equipment at the subscriber's side of
the local telephone loop. CPE is often supplied by the telephone company and is
always connected to the telephone company's network. Examples of CPE include
telephones, POTS splitters, terminals, modems, and the Cisco 676 router.
DSL
Digital subscriber line. A public network technology that delivers high bandwidth
over conventional copper wiring (such as telephone lines) at limited distances.
There are five types of DSL: ADSL, HDSL, IDSL, SDSL, and VDSL. All are
provisioned through modem pairs, with one modem located at a central office and
the other at the customer site. Because most DSL technologies do not use the
whole bandwidth of the twisted pair, there is room left for a voice channel. See
also
ADSL
.
DSLAM
Digital Subscriber Line Access Multiplexer. A device that concentrates traffic in
