3512 - 3512/SDC DSU/CSU
3512 DSU/CSU
Transmits sync/async from 2.4K to 56K Data rates to 56K available on all ports
Operates as a limited distance modem on private wire Full user and Telco local
and remote loopback tests Network-managed (NMS) & non-managed versions
EIA-232 and V.35 interfaces Optional SW56 Optional 4 channel A/B restoral port
supports external restoral via 2- or 4-wire switched 56, ISDN or analog modem.
Ports 1 thru 4 individually configurable for V.35 or EIA 232 Optional integral
V.32bis SLR option to 14.4K; leased line monitoring supported while under-restoral.
3512-SDC
DSU/CSU
All
features of 3512 plus SDC (Sync Data Compression)
Internal 3-port TDM/MSU lets you aggregate from
multiple devices over a single 56K link
Perfect for compressing bit-synchronous protocols
These units are out of production
but we have used and refurbished
To Order
3512 manual PDF files
- Table of Contents and Chapter 1,
2 and 3
Chap 1, Introduction - Describes modem functions and features;
Chap 2, Installation - Contains instructions for mechanical and
electrical installation of the modem;
Chap 3, Option
Selection - Describes both
hard strap and front panel
display options;
- Chapter 4, 5,
6, 7, 8, 9 - Appendix E, F,
and Index
Chap 4, Operation
- Describes standard control and indicator
functions, dialing procedures, and secure operation;
Asynchronous
Operating Commands -
Describes commands and displays;
Chap 6,
Status Registers - Describes status registers;
Chap 7,
V.25 bis Auto-dialer - Defines operation
and commands for the V.25 bis auto-dialer;
Chap
8, Protocols - Describes MNP
error control and flow control protocols;
Chap 9, Maintenance - Provides information
for maintaining the modem;
Appendix A, B,
C, and D
A. Modem Specifications;
B. Phone Jack Descriptions;
C. Fault Isolation Procedure;
D. Command Index and Defaults;