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This chapter describes the following configurations for the Cisco 6100 Series with NI-1 system:
The Direct Connect with a POTS splitter configuration supports 64 to 128 subscribers through directly connected modems using ADSL technology. To increase subscribership, you can add additional chassis to your system.
This configuration includes the following hardware components:
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Warning Systems using a Cisco 6100 chassis must connect to the network through a POTS splitter. |
Figure 2-1 shows the components for a Direct Connect with a POTS splitter configuration when you are using a Cisco 6130 chassis.
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Note Either a Cisco 6120 or a Siecor POTS splitter can be used in a Direct Connect with a POTS splitter configuration. Both chassis cannot be used. In a Direct Connect with a POTS splitter configuration using a Cisco 6120 and quad-port flexi ATU-C modules, it is necessary to install an additional Cisco 6120 chassis. The additional Cisco 6120 chassis expands the system to accommodate 128 ports. |
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Caution Mixing incompatible modules can cause unpredictable system behavior. See Table 3-8 for intermixing compatibility. |
Figure 2-2 shows the components for a Direct Connect with a POTS splitter configuration when you are using a Cisco 6100 chassis.
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Note Either a Cisco 6120 or a Siecor POTS splitter can be used in a Direct Connect with a POTS splitter configuration. Both chassis cannot be used. In a Direct Connect with a POTS splitter configuration using a Cisco 6120 and quad-port flexi ATU-C modules, it is necessary to install an additional Cisco 6120 chassis. The additional Cisco 6120 chassis expands the system to accommodate 128 ports. |
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Caution Mixing incompatible modules can cause unpredictable system behavior. See Table 3-8 for intermixing compatibility. |
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Tips For installation procedures for a Direct Connect with a POTS splitter configuration, refer to the Cisco 6100 with NI-1 Direct Connect Installation Guide or the Cisco 6130 with NI-1 Direct Connect Installation Guide. |
The Direct Connect without a POTS splitter configuration supports 64 to 128 subscribers through directly connected modems using either ADSL or SDSL technology. To increase subscribership, you can add additional chassis to your system.
This configuration includes the following hardware components:
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Note The STU-C modules cannot be used with a Cisco 6100. |
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Note In a Direct Connect without a POTS splitter configuration, only a Cisco 6130 can be used, and the Cisco 6130 features are supported with Release 2.4.0 or higher software only. |
In this configuration, the Cisco 6130 connects directly to the main distribution frame (MDF).
Figure 2-3 shows the components for a Direct Connect without a POTS splitter configuration.
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Tips For installation procedures for a Direct Connect without a POTS splitter configuration, refer to the Cisco 6130 with NI-1 Direct Connect Installation Guide. |
The DOH configuration supports up to 400 subscribers depending on the concentration ratio achieved through the addition of line interface modules (LIMs) to the Cisco 6110. You can dynamically update the concentration in the field by changing the number of LIMs and CAP ATU-C modules in the system.
This configuration includes the following hardware components:
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Warning Systems using a Cisco 6100 chassis must connect to the network through a POTS splitter. |
Figure 2-4 shows the components for a DOH configuration when you are using a Cisco 6100 chassis.
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Note The modems are separated into physical pools A and B, as shown in Figure 3-1, Figure 4-1, and Figure 5-1. |
Figure 2-5 shows a sample application of a five-to-one concentration for a DOH configuration of a Cisco 6100 with NI-1 system.
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Note The maximum concentration for a DOH configuration is 6.25:1. |
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Tips For installation procedures for a DOH configuration, refer to the Cisco 6100 with NI-1 Digital Off-Hook Installation Guide. |
A subtended network configuration
The term subtending refers to the host chassis, and subtended refers to the downstream chassis in a subtended network.
Figure 2-6 shows a subtending tree. The subtending host chassis at the top of the subtending tree connects directly to the ATM switch. You can have two subtended node chassis connected to the first subtending host chassis located at the top of the subtending tree. One or both of these subtended node chassis can also become a subtending host chassis and therefore have one or two subtended node chassis connected to them.
You can subtend a Cisco 6100/6130 chassis to three tiers, with up to six chassis, all connecting through one subtending host chassis to the ATM backbone (see Figure 2-6).
In Figure 2-7, the DS3 subtend host module (STM) is installed in slot 9 of the subtending host chassis. An NI-1 module is located in slot 10. If you have
Figure 2-7 shows a subtending host chassis and a subtended node chassis with corresponding slot number assignments.
All chassis have a system I/O card installed on the backplane. In addition to the system I/O card, a DS3 subtending I/O card is installed on the subtending host chassis backplane. For more information on the system I/O card and DS3 subtending I/O card, see the "Cisco 6100 and Cisco 6130 Cards" section.
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Tips For installation procedures for a subtended network configuration, refer to your installation guide. |
Posted: Wed May 17 11:00:53 PDT 2000
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