Paradyne T1 T1 Access Mux 926x - Manual (Page 103)

Setting Up
5-49 9161-A2-GH30-30 April 1998
Table 5-9. System Options (2 of 4)
Test Duration (min)
Possible Settings: 1 – 120
Default Setting: 10
Specifies the duration of the user-initiated loopback or pattern tests.
H Test Duration (min) only appears if Test Timeout is set to Enable.
1 to 120 – Timeout values in minutes.
Primary Clock Source
Possible Settings: Net1, Net2, DSX ss-p, Internal, External, Sync Data
Default Setting: Net1
The source selected for this configuration option provides all of the timing within the
T1 access unit and the clocks for all of the external interfaces. Failure of the clock
specified by this configuration option results in automatic fallback to the Secondary
Clock Source configuration option setting. Only one APM clock source can be selected
for either primary or secondary clock.
NOTE: For the Primary and Secondary Clock Source options, only Sync Data and
Internal can be selected for both options. All other selections must have
different settings (e.g., if Primary Clock Source is set to Net1, Secondary
Clock Source cannot be set to Net1).
Net1 – The primary clock for the unit is derived from the Network 1 T1 interface.
Net2 – The primary clock for the unit is derived from the Network 2 T1 interface.
DSX ss-p – The primary clock for the unit is derived from the DSX-T1 interface, where
ss is the slot number and p is the port number. This selection is only available if a
DSX-1 interface is enabled.
Internal – The primary clock for the unit is the internal clock.
External – The primary clock for the unit is the external clock (XTXC) provided through
one of the synchronous data ports (specified in the Port options). Only a disabled port
can be selected, and the port cannot be used for data. This selection only appears if at
least one synchronous data port is disabled.
Sync Data – The primary clock for the unit is derived from the XTXC signal of a
synchronous data port (specified in the Port configuration options). Only an enabled port
can be selected. This selection only appears if at least one synchronous data port is
enabled.
NOTE: If an EDL for the port is enabled, the external device must provide a clock
8 kbps less than the expected data port rate. For example, if 64 kbps is the
selected port rate, the external clock source should supply a 56 kbps clock
signal.
Port (for Primary Clock Source)
Possible Settings: S ssPp
Default Setting: the first available port
Selects a slot and a port number for the Primary Clock Source.
H Port only appears if Primary Clock Source is set to Sync Data or External.
S ssPp – Where ss is the slot number and p is the port number for the Primary Clock
Source.