Verilink QUAD T1 (880-503345-001) Product Manual - Manual (Page 34)

Configuration
3-8 Verilink QUAD T1 User Manual
Figure 3-4 Timing Menu
Set the options on the Timing Menu in the order in which they are
documented in
Table 3-5 . The PC, SC and TC commands appear
only when receive clock from shelf receive clock from shelf receive clock from shelf receive clock from shelf is set to yes.
Table 3-5 Timing Menu Options
-- QUAD T1 CONFIGURATION MENU (TIMING OPTIONS)-- -- QUAD T1 CONFIGURATION MENU (TIMING OPTIONS)-- -- QUAD T1 CONFIGURATION MENU (TIMING OPTIONS)-- -- QUAD T1 CONFIGURATION MENU (TIMING OPTIONS)--
R) receive clock from shelf: yes R) receive clock from shelf: yes R) receive clock from shelf: yes R) receive clock from shelf: yes
Current shelf timing source: card 3, net 1 (secondary) Current shelf timing source: card 3, net 1 (secondary) Current shelf timing source: card 3, net 1 (secondary) Current shelf timing source: card 3, net 1 (secondary)
Source Slot Number Synchronization Auto Restore Source Slot Number Synchronization Auto Restore Source Slot Number Synchronization Auto Restore Source Slot Number Synchronization Auto Restore
Primary PC) 6 PS) network PA) yes Primary PC) 6 PS) network PA) yes Primary PC) 6 PS) network PA) yes Primary PC) 6 PS) network PA) yes
Secondary SC) 3 SS) net 1 SA) yes
Secondary SC) 3 SS) net 1 SA) yes Secondary SC) 3 SS) net 1 SA) yes Secondary SC) 3 SS) net 1 SA) yes
Tertiary TC) 4 TS) net 1 TA) yes
Tertiary TC) 4 TS) net 1 TA) yes Tertiary TC) 4 TS) net 1 TA) yes Tertiary TC) 4 TS) net 1 TA) yes
X) exit this menu X) exit this menu X) exit this menu X) exit this menu
A [0.0.0.2] [1,3] QUAD T1 > A [0.0.0.2] [1,3] QUAD T1 > A [0.0.0.2] [1,3] QUAD T1 > A [0.0.0.2] [1,3] QUAD T1 >
Menu Option Description Instructions
R) receive clock
from shelf:
Used to select between using the timing table maintained
by the SCM, or using an independent clock source
within—or connected to—this module.
In most environments,
receive clock from shelf
should be set to Yes Yes Yes Yes.
PC) The slot number of the application module which will be
the primary clock source for this shelf. This module will
provide the clock signal used to drive the transmit clock
circuitry for all modules in the shelf that use T1 rate
clocks.
At the prompt, type the slot
number of the module
selected as the primary clock
source.
PS) Clock source within the module selected for the PC
option.
Select from the list of ports
available on the module.
PA) Enables or disables fallback to primary clock source after
a failed condition has cleared. If disabled, the SCM never
reverts to the primary clock source until an operator
changes this option.
Set to Yes Yes Yes Yes if the node is to
revert to a timing source
which failed, but is now OK.
SC) The slot number of the application module which will be
the secondary clock source for this shelf. If the primary
clock source fails, this module will provide the clock
signal used to drive the transmit clock circuitry for all of
the cards in the shelf which use T1 rate clocks.
At the prompt, type the slot
number of the module
selected as the secondary
clock source.
SS) Clock source within the module selected for the SC
option.
Select from the list of ports
available on the module.
SA) Enables or disables fallback to secondary clock source
after a failed condition has cleared. If disabled, the SCM
never reverts to the secondary clock source until an
operator changes this option.
Set to Yes Yes Yes Yes if the node is to
revert to a timing source
which failed, but is now OK.