T1 Interfaces - Coastcom D/I Mux III System User Manual

Table 3-8. LIU DIP Switch (SW2) Selections
SW2
Switch
Segment
1
2
3
4*
Channel Bank, Dual Channel
Bank, and ALPS modes
4*
Drop/Insert mode
5
6
7
8
* Switch SW2-4 will perform a different function depending on the multiplexer mode selection as
determined by switch segments 5, 6, and 7.
The D/I Mux III has Non-Volatile Random Access Memory (NVRAM) allowing the LIUs to
be software-configured. System configuration on a power-up can be accomplished with
the System Configuration (SC) command. Refer to Chapter 4. Configuration and
Operation for more information on the SC command.

T1 Interfaces

The two types of T1 interface that can be used in a D/I Mux III system include the Dual DSX-1
Interface, which transmits and receives a basic DSX-1 signal, and the Dual CSU Interface which
allows the D/I Mux III to perform the functions of a Channel Service Unit (CSU).
Dual Standard or Enhanced DSX-1 Interfaces (No CSU Function)
Chapter 3. Installation
P/N 30309-104A and 30309-114A
Designation Selection
B8ZS
B7
ESF
TIM
TIM
DCB
CHN
YEL
ALPS
Open B8ZS line coding
Closed Transparent line coding
Open B7 line coding
Closed Transparent line coding
Open ESF framing
Closed SF framing
Closed Loop timing
Open Local timing
Closed Network timing from T1-2
Open Network timing from T1-1
Open Dual Channel Bank mode
Closed No effect
Open Channel Bank mode
Closed Drop/ Insert mode
Open Pass through yellow alarm
Closed Block yellow alarm
Open ALPS mode
Closed No effect
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Description