Chapter 3. Operation
3-8 Dual Nx56/64 Option Module User Manual 61200142L1-1
0 INHIB
If the Nx interface detects an uninterrupted string of 0s
being transmitted toward the network, and if 0s are
transmitted for more than one second, then the TSU 100
forces 1s towards the network.
Choices: On; Off
INBAND
Inband Configuration Channel - Used to enable/disable
an 8 kbps remote configuration channel (see Figure 3-5
on page 3-9). When this option is set to ON, the first DS0
mapped to the Nx interface operates in 56K mode and
the DTE clock rate is reduced by 8 kbps. The TSU/HSU
uses this 8 kbps channel to send and receive configura-
tion data across a T1 span. As shown in Figure 3-5, this
allows the PC connected to the chain-in port on TSU 600
A to monitor/configure both TSU 600 A and B. This fea-
ture is useful when FDL connectivity is not available
across the T1 span.
The 8 kbps channel is only taken out of the first DS0. If
two 64K DS0s are mapped, the DTE rate would be 120
kbps instead of 128 kbps.
Table 3-1. Normal Mode Operation
SIGNAL RTS V-54
LOOPBACK 511 TEST
ON SELF
TEST
ACTIVE
NETWORK
TEST
ACTIVE
NO DS0
MAPPED NETWORK
ALARM
CTS Follows off off off off off off
DCD — — — off off off off
DSR — off off off off off —
— = Do not care
Force On = On under all conditions