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DEFINITY ECS Release 8.2 ATM Installation,
Upgrades, and Administration
555-233-124
Issue 1
April 2000
Administering ATM-PNC and ATM-CES
5-4Administering ATM Switch
5
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-a or pnc-b to 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
administration
A remote switch connected with a permanent virtual circuit (PVC). The
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.
Continued on next page