Lucent Technologies Comcode 108678723 manual Synchronization Installation Testing

DEFINITY ECS Release 8.2 ATM Installation,	Issue 1
Upgrades, and Administration 555-233-124	April 2000

3Installing a DEFINITY ECS ATM-PNC

		Synchronization Installation and Testing				3-3
Table 3-1. General installation process
	√	Step	Action	Description
		7.	Connect the fiber	Connect fiber optic cable to the SC connector on the
			optic cables to the	faceplate of each TN2305/TN2306 circuit pack in the
			ATM interface circuit	DEFINITY PPN and EPN.
			packs	■ The TN2305/TN2306 circuit pack interface requires SC
					connectors (see Note in Step 5).
				■ Do not reuse existing fiber cabling with ST connectors
					at both the DEFINITY switch and the ATM switch. This
					requires an ST-to-SC adapter at both ends. It is better
					to order the cable with the SC connectors at both
					ends.
		8.	Record configuration	Record DEFINITY ECS switch-to-ATM port (port locations
				for each ATM circuit pack) in Table A-1 (in Appendix A,
				‘‘Baselining the Customer’s Configuration’’).
					NOTE:
					Read the MAC addresses from the ATM switch (refer
					to your ATM switch’s quick reference guide) and
					record them in Table A-1.
		9.	Record fiber	Record the fiber optic cable runs on the lightwave
			connections	interface (LIU) diagram (Figure A-1) in Appendix A,
				‘‘Baselining the Customer’s Configuration’’.
		10.	Install and test	Follow the procedures for installing and testing the
			synchronization	synchronization splitter and the T1 or E1 timing source in
			splitter, if required.	‘‘Synchronization Installation and Testing’’ on page 3-.3

Synchronization Installation and

Testing

A DEFINITY ATM-PNC requires network synchronization for DS1 circuit packs not to slip relative to the LEC/IXC switches. The ATM switch serves as the sync reference source for the DEFINITY. The ATM switch, in turn, derives primary and secondary sync. To accomplish this, the most common option is to use synchronization expanders (splitters).