L2 Protocol (Tdm Firmware) - T1 Interface - ADTRAN 604 System Manual

Section 4 User Interface Guide
L2 P (TDM F
ROTOCOL
Configure the L2 Protocol parameters and view the status of the Network T1 interface using items from
this menu.
L2 P (TDM – T1) > P
ROTOCOL
Configure the L2 protocol mode. Choices are
the interface for Point-to-Point Protocol signaling on Layer 2. Selecting
frame relay signaling on Layer 2. Selecting
Link Control signaling on Layer 2. Selecting
L2 P (TDM – T1) > P
ROTOCOL
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 (TDM – T1) > P
ROTOCOL
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 (TDM – T1) > P
ROTOCOL
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 (TDM – T1) > P
ROTOCOL
Setting the
L2
PROTOCOL
network.
The
L2
PROTOCOL
90
) – T1 I
IRMWARE
ROTOCOL
PPP
HDLC
A
UTO
> PPP
ROTOCOL
> FRE
ROTOCOL
> HDLC
ROTOCOL
> A
ROTOCOL
to allows the unit to automatically detect the
A
UTO
must be set to
A
© 2004 ADTRAN, Inc.
Total Access 600 Series System Manual
NTERFACE
, , , and
FRE HDLC A
UTO
FRE
configures the interface for generic High-Level Data
enables the Auto-config feature.
UTO
in order to use the Auto-config feature.
UTO
(def). Selecting configures
PPP
configures the interface for
from the
L2
PROTOCOL
61200624L1-1B