Lucent Technologies Comcode 108678723 manual Administering ATM Switch, Administering Definity ECS

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

5Administering ATM-PNC and ATM-CES

Administering ATM Switch 5-4

Administering ATM Switch

To administer the ATM switch, refer to your switch’s quick reference guide.

Administering DEFINITY ECS

The DEFINITY ECS switch software provides 2 kinds of ATM service:

■ATM Port Network Connectivity (ATM-PNC)

■ATM Circuit Emulation Service (ATM-CES)

Table 5-3 outlines important concepts to observe when administering ATM.

Table 5-3. General DEFINITY ECS ATM parameters

Concept	Description
PNC duplication	If you are installing or upgrading a critical reliability system, you must enable
	the PNC duplication on the system-parameters customer-options screen
	(init password required) before the feature can be used. If it is enabled, you
	must further
	■ Add pnc-aor pnc-bto command strings to clarify which carrier the ATM
	interface circuit pack is in
	■ Specify the location of the ATM interface circuit pack serving as the
	duplicate
	The ATM interface circuit pack in the A carrier must be in the same port
	network as the B carrier. If not, an alarm is issued. You need not administer
	ATM interface circuit packs serving as backups to each other with the same
	parameters.
Fiber links	You do not need to administer fiber links for ATM-PNC. Information on the
	ATM circuit pack screen identifies which packs are used for PNC
	(endpoint-1), and endpoint-2 is administered on the ATM switch.
Remote switch	A remote switch connected with a permanent virtual circuit (PVC). The
administration	DEFINITY system recognizes the remote switch as a node with compatible
	circuit parameters at the other end of an emulated circuit.
	You can connect a remote switch to the DEFINITY with one or more
	CES-emulated circuits. In such a case, the emulated circuits remain
	discrete.
Synchronization	PNC—All synchronization is derived from the ATM switch providing port
	connectivity. The ATM switch obtains synchronization from either a sync
	splitter attached to one or two DS1 cards or from the ATM network.
	CES—Synchronization is derived the same way it is in a non-ATM-PNC or
	ATM-PNC environment, whichever applies.