Cisco 15310-MA Elect. Interface Assemblies

Part Number	Description
15310-EIA-HD-A	Combination DS1 and DS3/EC1 backplane interface A
15310-EIA-HD-A=	Combination DS1 and DS3/EC1 backplane interface A
15310-EIA-HD-B	Combination DS1 and DS3/EC1 backplane interface B
15310-EIA-HD-B=	Combination DS1 and DS3/EC1 backplane interface B