Total Access 850 System Manual
Section 4 User Interface Guide
64203376L1-1B
© 2004 ADTRAN, Inc.
117
L2 P
ROTOCOL
(T1 TDM F
IRMWARE
) – T1 I
NTERFACE
Configure the L2 Protocol parameters and view the status of the T1 interface using items from this menu.
L2 P
ROTOCOL
(T1 TDM – T1) > P
ROTOCOL
Configure the L2 protocol mode. Choices are
PPP
,
FRE
,
HDLC
, and
A
UTO
(def). Selecting
PPP
configures
the interface for Point-to-Point Protocol signaling on Layer 2. Selecting
FRE
configures the interface for
frame relay signaling on Layer 2. Selecting
HDLC
configures the interface for generic High-Level Data
Link Control signaling on Layer 2. Selecting
A
UTO
enables the Auto-config feature.
L2 P
ROTOCOL
(T1 TDM – T1) > P
ROTOCOL
> PPP
Point-to-Point Protocol (PPP) is an 8-bit serial protocol which allows a PC to connect as a TCP/IP host to a
network through an asynchronous port. PPP is used for connection from a PC to an Internet Service
Provider (ISP) for Internet access. PPP works over synchronous and asynchronous circuits.
Router-to-router and host-to-network connections can be made via PPP. PPP includes error detections
which Serial Line Internet Protocol (SLIP) and other protocols do not.
L2 P
ROTOCOL
(T1 TDM – T1) > P
ROTOCOL
> FRE
Frame Relay is a switched data link layer protocol that handles multiple virtual circuits using High-Level
Data Link Control (HDLC) encapsulation. Frame Relay uses statistical multiplexing as opposed to
time-division-multiplexing to multiplex many logical connections over a single physical link. It contains a
cyclical redundancy check (CRC) for detecting bad data, but leaves the error correction algorithms to be
performed by higher protocol layers. Similarly, Frame Relay uses simple congestion notification. This
notification in turn can alert higher-layer protocols to exercise flow control. These characteristics allow
Frame Relay to provide a more flexible and efficient use of bandwidth.
L2 P
ROTOCOL
(T1 TDM – T1) > P
ROTOCOL
> HDLC
HDLC (High-level Data Link Control) is a group of protocols or rules for transmitting data between two
network points (point-to-point transmission). HDLC provides a low overhead system for transmitting data
over Layer 2. IP packets are encapsulated into frames with an HDLC start and end flag. Generic HDLC
protocol should be used when connecting with remote equipment using proprietary HDLC encapsulation
methods.
L2 P
ROTOCOL
(T1 TDM – T1) > P
ROTOCOL
> A
UTO
Setting the
L2
PROTOCOL
to
A
UTO
allows the unit to automatically detect the
L2
PROTOCOL
from the
network.
The
L2
PROTOCOL
must be set to
A
UTO
in order to use the Auto-config feature.
Summary of Contents for Total Access 850
Page 14: ...Table of Contents Total Access 850 System Manual 14 2004 ADTRAN Inc 64203376L1 1B ...
Page 16: ...Section 1 System Description Total Access 850 System Manual 16 2004 ADTRAN Inc 64203376L1 1B ...
Page 22: ...Section 1 System Description Total Access 850 System Manual 22 2004 ADTRAN Inc 64203376L1 1B ...
Page 224: ...Section 5 DLP 4 Total Access 850 System Manual 224 2004 ADTRAN Inc 64203376L1 1B ...
Page 232: ...Section 5 DLP 6 Total Access 850 System Manual 232 2004 ADTRAN Inc 64203376L1 1B ...
Page 236: ...Section 5 DLP 7 Total Access 850 System Manual 236 2004 ADTRAN Inc 64203376L1 1B ...
Page 244: ...Section 5 DLP 10 Total Access 850 System Manual 244 2004 ADTRAN Inc 64203376L1 1B ...
Page 252: ...Section 5 DLP 13 Total Access 850 System Manual 252 2004 ADTRAN Inc 64203376L1 1B ...
Page 256: ...Section 5 DLP 14 Total Access 850 System Manual 256 2004 ADTRAN Inc 64203376L1 1B ...
Page 264: ...Section 5 DLP 16 Total Access 850 System Manual 264 2004 ADTRAN Inc 64203376L1 1B ...
Page 278: ...Section 6 ADTRAN Utilities Total Access 850 System Manual 278 2004 ADTRAN Inc 64203376L1 1B ...