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Introduction and Specifications
SRM-6 Applications
4-Wire Private Line Modem Application
The SRM-6 multiplexer is shown below in a typical 4-wire private line modem application with the
SC V.F28.8 modem and the SCM. On the DTE side, the SRM-6 acts as a DCE, multiplexing up six
DTEs into one aggregate. On the DCE side of the SRM-6, communication with the co-located
modem is configured to one of three aggregate data rates: 19.2, 28.8, or 33.6 Kbps. Local and
remote sites are connected via the 4-wire, leased private line. Management is conducted via a craft
or LAN/Telnet connection to the SCM.
RS-232
DTE 1
DTE 2
DTE 3
DTE 4
DTE 5
DTE 6
Figure 1-3
DDS Network Application
The SRM-6 multiplexer is shown below in a typical DDS application with the SC 521A/S DSU and
the SCM. On the DTE side, the SRM-6 acts as a DCE, multiplexing up six DTEs into one aggregate.
On the DCE side of the SRM-6, communication with the co-located DSU is configured to one of
two aggregate data rates: 56 or 64 Kbps. Local and remote sites are connected over the 4-wire, DDS
line. Management is conducted via a craft or LAN/Telnet connection to the SCM.
RS-232
DTE 1
DTE 2
DTE 3
DTE 4
DTE 5
DTE 6
Figure 1-4
076R176-000
Issue 1
LOCAL SITE
RS-232 or
RS-530
SC V.F28.8
SRM-6 MUX
MODEM
SCM
Telnet
OR
Craft
SNMP
SRM-6 Multiplexing in a Private Line Modem Application
LOCAL SITE
RS-232 or
RS-530
SC 521A/S
SRM-6 MUX
DDS DSU
SCM
Telnet
OR
Craft
SNMP
SRM-6 Multiplexing in a Typical DDS Network
SC SRM-6 Multiplexer
Installation & Operation Manual
SpectraComm SRM-6 Overview
REMOTE SITE
4-Wire Leased
Private Line
SC V.F28.8
MODEM
SCM
Craft
OR
REMOTE SITE
DDS
SC 521A/S
Network
DDS DSU
SCM
OR
Craft
Up to
6 DTEs
SRM-6 MUX
Telnet
SNMP
Up to
6 DTEs
SRM-6 MUX
Telnet
SNMP
1-5
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