Lucent Technologies Comcode 108678723 manual Bandwidth-constricted ATM network configuration

DEFINITY ECS Release 8.2 ATM Installation,	Issue 1
Upgrades, and Administration 555-233-124	April 2000
6 Troubleshooting
Troubleshooting ATM-PNC	6-44

ATM-PNC configuration in which Inverse Multiplexing for ATM (IMA) is used going into and coming out of the network cloud.

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cydaband LJK 020100

Figure Notes

1.	DEFINITY ECS PPN	6.	DEFINITY ECS access terminal
2.	DEFINITY ECS Expansion Port Network (EPN)	7.	IMA connection
3.	OC-3/STM-1 connection	8.	ATM network
4.	ATM switch A	9.	Access concentrator
5.	ATM switch B	10.	DEFINITY ECS EPN

Figure 6-4. Bandwidth-constricted ATM network configuration

In this configuration connections from the DEFINITY ECS switch and the ATM backbone switch and to the ATM access concentrator are OC-3/STM-1 through the TN2305/TN2306 ATM interface circuit packs over fiber optic cable. When traffic exceeds the capacities of the IMA links, contention for access to the ATM