|
|
This chapter is an overview of Cisco 6130 with NI-2 digital subscriber line access multiplexers (DSLAMs). The chapter describes the Cisco 6130 NI-2 DSLAM system and its components, offers sample configurations, and discusses the IOS management software.
This chapter includes information about
A Cisco 6130 NI-2 DSLAM system works as follows:
1. Line modules send and receive subscriber line data (often Internet service) over existing copper telephone lines. The DSLAM concentrates all traffic onto a single high-speed trunk for transport to the Internet or the corporate intranet.
For detailed information about CPE devices in the Cisco 6000 DSL product family, visit the Cisco web site at
The Cisco 6130 NI-2 DSLAM
Installing a typical Cisco 6130 NI-2 DSLAM with a POTS splitter involves these steps:
1. Locating one or more Siecor POTS splitters in the DSL service provider CO facility, usually in the same rack as the DSLAM.
2. Subscriber voice and digital data copper wire loops enter the CO facility bundled to terminate at the facility MDF.
3. Subscriber wire pairs are internally routed from the MDF to Champ connector receptacles on the POTS splitter rear panel.
4. Filters in the POTS splitter direct voice signals to six Champ connector receptacles on the POTS splitter rear panel and ADSL signals to six xDSL Champ connector receptacles on the same rear panel.
5. The POTS Champ connector outputs are routed to the CO public switched telephone network (PSTN). The ADSL outputs are routed to six input receptacles on the Cisco 6130 NI-2 DSLAM chassis.
A typical Cisco 6130 NI-2 DSLAM installation without POTS involves these steps:
1. Copper wire loops carrying only ADSL signals enter the CO facility bundled to terminate at the facility MDF.
2. Three-by-three Cisco champ connector cables route subscriber ADSL wire pairs directly from the MDF to the six ADSL line input Champ connectors on the Cisco 6130 NI-2 DSLAM chassis backplane.
This section describes
You can use one or more 6130 NI-2 DSLAMs to configure a Cisco 6130 NI-2 system. This involves work with the
Each slot (Figure 1-1) on a Cisco 6130 NI-2 DSLAM chassis has a reference number. Numbering is sequential from left to right and top to bottom. In figures in this guide, chassis slot numbers are shown on modules for illustration purposes---they actually appear on a metal strip above each chassis slot group.
A Cisco 6130 NI-2 DSLAM can accommodate a single DS3 or OC-3 single- or multi-mode NI-2 network interface card in slot 10 (primary) or slot 11 and from 16 to 32 ATUC-1-4DMT line cards.
Line cards are installed in slots 1 through 8, 13 through 28, and 31 through 38.
Modem signals are routed from each Cisco 6130 NI-2 DSLAM backplane slot connector to various Cisco 6130 NI-2 DSLAM backplane Champ cable receptacles. Each line card has four modems.
The maximum number of subscribers that a single Cisco 6130 NI-2 DSLAM chassis can accommodate is 128.
Cover unused DSLAM chassis slots with Cisco blank faceplates to comply with Network Equipment Building Systems (NEBS) safety requirements.
Figure 1-1 shows a Cisco 6130 NI-2 DSLAM front view without a front cover.
Features of the Cisco 6130 NI-2 system include the following:
Table 1-1 lists the physical and electrical specifications of the Cisco 6130 NI-2 system.
| Specification | Description | ||
|---|---|---|---|
Dimensions | Multiplexer chassis | 9 RUs1---23 in. x 15.75 in. x 12 in. (58.42 cm x 40.005 cm x 30.48 cm) | |
Weight | DSLAM
Siecor POTS splitter
Fan tray | Empty---approximately 31 lb (14.07 kg) Empty--- not greater than 17 lb (7.72 kg) | |
Network interface | |||
ADSL interface | DMT-2---Up to 8.032 Mbps downstream/864 kbps upstream | ||
Craft interface | EIA/TIA-232 | ||
|
See "Planning for a Cisco 6130 NI-2 DSLAM System," for detailed power requirements. | |||
CO operating requirements | Temperature | 41 to 104ºF (5 to 40ºC)---operating | |
Subtending | Up to 12 tree or daisy-chain connected DSLAMs with DS-3 type NI-2 modules and up to 12 daisy-chain connected DSLAMs with OC-3 type NI-2 modules. | ||
| 1RU = rack unit. A rack unit is 1.75 inches (4.45 cm). |
Table 1-2 lists Cisco 6130 Family system software requirements.
| DSLAM | Minimum Cisco IOS Release |
|---|---|
Cisco 6130 NI-2 DSLAM | Cisco I0S Release 12.0.5(DA1) |
Table 1-3 lists Cisco 6130 NI-2 system standards and certifications.
| Category | Description |
|---|---|
NEBS | |
EMI | FCC Part 15, Class A |
Safety |
Currently, Cisco 6130 NI-2 DSLAM systems are Year 2000 (Y2K) compliant. The following URL supplies up-to-date information about Y2K compliance:
http://www.cisco.com/warp/public/cc/cisco/mkt/gen/2000/prodlit/cptbl_ov.htm
The Cisco 6130 NI-2 DSLAM chassis has 38 slots. These include
See "Cisco NI-2 DSLAM System Modules," for information about modules available in Cisco 6130 NI-2 systems.
The Cisco 6130 NI-2 DSLAM chassis ships with a front door that must be installed and in place for the system to achieve NEBS compliance (Figure 1-2). For more information about NEBS requirements, refer to the Regulatory Compliance and Safety Information for the Cisco 6100 Series System document.
An optional rear door attaches to the back of the Cisco 6130 NI-2 DSLAM chassis and restricts access to the backplane and its cable receptacles. To keep cables from interfering with rear door motion, tie-wrap the cables from the top of the rack and attach them to the door-mounting brackets. For more information about the rear door installation, refer to any of the following related documents:
If you install a Cisco 6130 NI-2 DSLAM chassis in a rack, you must also install a fan tray directly beneath the DSLAM chassis. Allow 1 rack unit (RU) of space below the fan tray (see Figure 1-1) for each DSLAM in the rack. Each fan tray has three fans that provide forced air convection cooling, through a filter at the bottom of the fan tray. Refer to the Cisco 6130 Fan Tray Configuration Notes document for details.
Figure 1-3 shows the fan tray front view.
LEDs are located on the front of each fan tray. If the LED is
For fan tray installation information, refer to the Cisco 6130 Fan Tray Configuration Notes.
Use the Siecor ADSL POTS splitter with the Cisco 6130 NI-2 DSLAM. You can install a Cisco 6130 NI-2 DSLAM and POTS splitter in the same 23-inch CO facility rack.
The Siecor POTS splitter contains up to 16 passive printed circuit modules that contain multiple filters. Each POTS splitter module contains eight filters that separate voice analog and ADSL signals.
System cables route CO facility MDF subscriber lines to input receptacles on the POTS splitter. System Champ connector cables also route voice analog signals from POTS splitter output receptacles to the public switched telephone network (PSTN). The Champ connector cables also route ADSL signals from POTS splitter output receptacles to input receptacles on the Cisco 6130 NI-2 multiplexer chassis.
Figure 1-4 shows a Siecor POTS splitter without a front cover. The figure shows how the 16 filter modules are arranged in the chassis.
To colocate voice switching equipment through the CO facility main distribution frame (MDF), use separate Cisco 50-pin Champ connector cables to connect POTS splitter voice signals to the public switched telephone network (PSTN) for distribution.
Champ connector cables are available from Cisco for these connections, or you can build them according to standard, accepted cable specifications (for example, the Nortel NT-T100 series cable specification). For more information about required cables, see "Cisco 6130 NI-2 DSLAM System Cables."
Depending on the configuration you install
The Siecor POTS splitter is electrically passive. Therefore, a complete loss of power in a Cisco 6130 NI-2 DSLAM system with POTS does not affect voice transport to the PSTN.
Posted: Mon Mar 6 06:54:42 PST 2000
Copyright 1989 - 2000©Cisco Systems Inc.