Sigrand SG-17B, Руководство пользователя

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The interface of SHDSL modem complies with ITU-T G.991.2.bis version
(the version of 2005) and uses the TCPAM – Trellis-Coded Pulse Amplitude
Modulation encoding set for data transfer.
The modem is equipped with the following interfaces:
•
one SHDSL interface (ITU-T G.991.2.bis standard) operating in
the bitrate range 192-15296 Kb per second;.
•
one Ethernet interface 10/100Mb (IEEE 802.3) with the options of
automatic rate adjustment and auto-sensing MDI/MDI-X;
•
one RS-232C interface for managing the modem.
1.1. Characteristics of the linear DSL interface
Connection type point-to-point
The number of wires in the communication
line 2 (one pair)
Type of the cable
ТПП, КСПП, UTP
Linear code TCPAM
Input and output resistance, Ohm 135
Bitrate range of data transfer, Kb per second 192-15296
Step of bitrate change, Kb per second 64
Type of communication full-duplex
Mode of data transfer synchronous, packeted
Packet format HDLC
Checksum CRC32
Type of socket 2EDGR-5.08-03P
Breakdown voltage of the galvanic isolation
transformer, not less than, V
1500
Arrester response voltage (differential), V 30
Breakdown voltage of the surge arrester
(phase-locked), V
350