Nortel BCM 3.7, Manual

Page: 168 / 1004

168 Configuring the DDI Mux module
N0008589 3.3
Transmit clock
inversion Off
On
When the internal DCE signal is used to clock in data, signal delays caused by
cable length can cause clocking errors. To adjust for round trip delays between
the DDI Mux and DTE, invert the internal clock used by the module to clock in
data from the DTE.
To enable clock inversion, select the DTE clock or Auto clock.
Data inversion Off
On
When Data Inversion is on, the DDI Mux inverts the data before routing it to the
T1 connection and DTE. Inversion allows the module to use the properties of
protocols such as HDLC/SDLC (a transmission standard for data) to meet the
ones density requirement of the network. This feature must be available and
activated at the far end.
Table 18 DDI Mux Configuration settings (Continued)
Setting Value Description