Patton electronics SmartNode Series Software Configuration Manual page 430

35 • ISDN port configuration
428
Figure 74. Integration of ISDN access lines
Port activation deactivation—ISDN ports can be config-
ured while they are active. However they will be internally dis-
abled to modify the configuration and then re-enabled. All active
calls on the port are dropped during this process. Configuration
changes should only be performed during planned down times.
Reference clock source and synchronization—The
SmartNode uses a single reference clock source for the synchro-
nization of the 64kbit/s PCM channels on the ISDN ports and in
the CS context. This reference clock source can be internal or it
can be derived from one of the ISDN ports. If the clock reference
is not configured in accordance with the network environment,
clock slips and related voice quality degradations can occur.
Refer to chapter 26,
"CS context overview"
how to configure the reference clock
SmartWare Software Configuration Guide
on page 293 on
Introduction