060R122-000
SpectraComm Dual V.34 Modem
1-1
Issue 15
Installation and Operation
Chapter 1:
System Description
Overview
The SpectraComm Dual V.34 Modem is a full universal (on-line compatible with
all modems that comply with V.34), full-duplex, multi-speed modem, providing
33.6 kbps to 300 bps operation over the telephone (VF) line, and is connected to
a switched or private 2-wire line. The modem can support asynchronous or
synchronous DTE data rates up to 128 kbps. Operation can be either synchronous
or character asynchronous at all speeds down to 1200 bps. Operation is
asynchronous at 0 to 300 bps. Synchronous rates above 28.8 kbps require use of
the synchronous data compression feature.
Up to 16 Dual V.34 modem cards may be housed in a SpectraComm/UAS shelf,
and up to 31 may be housed in a dual shelf configuration, allowing for one SCM
card. The SpectraComm 2000 Shelf holds two cards and can be rack-mounted or
wall-mounted and supports central and remote site installation. For non-NEBS
standalone applications, the SpectraComm AC or DC enclosure can house one
product card.
Supported Protocols
•
V.34 for negotiated high-data-rate connections
•
V.42 (LAPM) error correction
•
V.42 bis data compression
•
MNP-2 through MNP-4 error correction
•
MNP-5 data compression
•
MNP-10 cellular phones
•
ITU-T V.32 bis, V.32, V.22 bis, V.22, V.21 and V.34 modes
•
Bell 212A and Bell 103 specifications
Security Features
•
Password security (Online Security, SteadFast Security)
•
Security Callback (prevents unauthorized access to a remote modem)
•
Front Panel lockout
•
When the modem is optioned at the factory, supports Remote Authentication
Dial In User Service (RADIUS).
•
When the modem is optioned at the factory, supports AES Encryption.
•
When the modem is optioned at the factory, supports Secure Access
Authentication.
Summary of Contents for 060A027-001
Page 137: ......
