Nortel Networks 553-3001-211 manual Reference clock errors

Page 342 of 894 NT5D97 Dual-port DTI2/PRI2 card

Figure 74

Clock Controller primary and secondary tracking

			Clock
			Controller 0
			J1
Primary	REF 1	Primary	J2
clocking	Primary		J3
source
	Reference
	REF 2	Primary
			Clock Controller
Secondary		Secondary	Backup
	REF 1
clocking
	Secondary		Clock
source
	Reference		Controller 1
	REF 2	Secondary	J1
			J2
			J3
			553-7401

Reference clock errors

CS 1000 Release 4.0 software checks at intervals of 1 to 15 minutes to see if a clock controller or reference-clock error has occurred. (The interval of this check can be configured in LD 73).

In tracking mode, at any one time, there is one active clock controller which is tracking on one reference clock. If a clock controller error is detected, the

553-3001-211 Standard 2.00 September 2004