USP Line Card (V.35/X.21/RS-232) Overview
Except on the first page, right running head:
Heading1 or Heading1NewPage text (automatic)
273
Alcatel-Lucent
Beta
Beta
CLI Configuration Guide
USP L
INE
C
ARD
(V.35/X.21/RS-232) O
VERVIEW
In synchronous communications, data is sent as frames of sizes that vary from a
few bytes through 1500 bytes for Ethernet or 4096 bytes for most Frame Relay
systems. The clock is embedded in the data stream encoding, or provided on
separate clock lines such that the sender and receiver are always in
synchronization during a frame transmission.
There are two types of devices that communicate over a Serial Interface: DTE
(Data Terminal Equipment) and DCE (Data Circuit-Terminating Equipment).
A DTE connects to a network through a DCE device. In a typical scenario, a DTE
device is connected to a DCE device. The DCE device provides a clock signal that
paces the communication between the device and the router.
V.35/X.21/RS-232 are well known communication protocols over synchronous
serial lines.
•
V.35 Interface
The V.35 interface was originally specified by CCITT as an interface for
48kbps line transmissions. It has been adopted for all line speeds above
20kbps.
V.35 is a mixture of balanced and common earth signal interfaces. The control
lines including DTR, DSR. DCD, RTS, and CTS are single wire common earth
interfaces. The data and clock signals are balanced signals.
•
X.21 Interface
The physical interface between the DTE and the DCE is defined in ITU-T
recommendation X.21. The DCE provides a full-duplex, bit-serial,
synchronous transmission path between the DTE and the local PSE.
•
RS-232 Interface
RS-232 is specified by Electronic Industries Association. It specifies signal
voltage, timing, function, a protocol for information exchange, and mechanical
connectors. Signal function includes signal for ground, data interchange, flow
control, control of the remote modem, modem status and control signals. For
synchronous communication, these signals provide timing information for the
transmitter and receiver, which may operate at different baud rates.
Содержание OmniAccess 700
Страница 38: ...Left running head Chapter name automatic 12 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 176: ...Left running head Chapter name automatic 150 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 224: ...Per VLAN Spanning Tree Left running head Chapter name automatic 198 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 258: ...Port Monitoring Left running head Chapter name automatic 232 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 260: ...Left running head Chapter name automatic 234 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 296: ...T1E1 Line Card Left running head Chapter name automatic 270 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 360: ...Point to Point Protocol Left running head Chapter name automatic 334 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 434: ...Left running head Chapter name automatic 408 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 462: ...Common Classifiers Left running head Chapter name automatic 436 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 464: ...Left running head Chapter name automatic 438 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 534: ...Border Gateway Protocol Left running head Chapter name automatic 508 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 638: ...Left running head Chapter name automatic 612 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 762: ...Filter and Firewall Left running head Chapter name automatic 736 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 890: ...Transparent Firewall Left running head Chapter name automatic 864 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 940: ...Left running head Chapter name automatic 914 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1000: ...Quality of Service Left running head Chapter name automatic 974 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1002: ...Left running head Chapter name automatic 976 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1044: ...DNS Domain Name Service Client Left running head Chapter name automatic 1018 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1046: ...Left running head Chapter name automatic 1020 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1058: ...Left running head Chapter name automatic 1032 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1074: ...Lifeline Left running head Chapter name automatic 1048 Beta Beta CLI Configuration Guide Alcatel Lucent line con 0 end ...
Страница 1076: ...Left running head Chapter name automatic 1050 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1118: ...Web Cache Server Left running head Chapter name automatic 1092 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1120: ...Left running head Chapter name automatic 2 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1140: ...QoS Values and Mnemonics Left running head Chapter name automatic 22 Beta Beta CLI Configuration Guide Alcatel Lucent ...
Страница 1156: ...IPsec Interoperability of OA 700 Left running head Chapter name automatic 38 Beta Beta CLI Configuration Guide Alcatel Lucent ...