Describes the Cisco GSHDSL EFM-ATM NIM hardware, outlining its features, operational modes, and integration within network infrastructures.
G.SHDSL EFM/ATM NIM
The Cisco G.SHDSL EFM/ATM NIM connects Cisco 4000 Series Integrated Services Routers with central office Digital Subscriber Line Access Multiplexers (DSLAMs) and supports up to four DSL pairs. The DSL pairs are bundled in groups and configured in the Cisco IOS CLI by using the dsl-group command. Use the mode command to choose the mode (ATM or EFM).
The NIM supports the following configuration:
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You can configure up to four DSL groups.
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You can configure auto mode on only one DSL group. For example, DSL group 0.
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In ATM Mode, you can configure the lines to use 2-wire, 4-wire (standard or enhanced), or m-pair.
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In EFM mode, you can configure a DSL group with any one of the lines in 2-wire non-bonding mode or with multiple lines in bonding mode.
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Depending on the mode (ATM or EFM), the corresponding interface (ATM or EFM) is automatically created.