The 6100 Chassis Configuration

This section discusses the three primary configurations for the Cisco 6100 system. At this time only Digital Off-Hook (DOH) standard and direct connect configurations are supported.

DOH (standard configuration) - In this configuration, multiplexer universal slots are used strictly for ATU-C modules; line concentration chassis (LCC) are provisioned for line interface modules (LIMs); and POTS splitter chassis (PSC) are provisioned for POTS modules.
DOH (entry-level configuration) - In an entry-level configuration, the multiplexer universal slots are used for mixing ATU-C modules and LIMs, no LCC is provisioned, and the PSC is used to provision the POTS modules.

Note This configuration will be supported in a future release.

Direct connect configuration - In an direct connect configuration, the multiplexer universal slots are used for ATU-C modules, no LCC is provisioned, and the PSC is used to provision the POTS modules. This configuration style does not allow DOH switching between LIMs and ATU-Cs, but provisions one modem directly and physically connected to one specific subscriber line.

In addition to the above configurations, 6100s can be subtended to three levels, all going through one host 6100 to the network backbone. Subtending is supported in both DOH standard and direct connect configurations.

3.1 Digital Off-Hook Standard Configuration

A combination of a multiplexer chassis (MC), LCC, and PSC can be used to provide the highest subscriber concentration. For simplicity, this section discusses a configuration with one MC, one LCC, and one PSC. For maximum subscription in any given rack, up to five LCCs and five PSCs (four each in a 7-foot rack) can be supported by one MC. Figure 3-1 shows an MC with an LCC and a PSC and corresponding slot number assignments. Then Table 3-1 through Table 3-3 describe each module assignment for each of the these chassis. Then Figure 3-2 illustrates an application of this configuration.

The "Installation - DOH Standard" chapter details the installation procedures for this configuration.

Figure 3-1: Chassis Slot Configuration Options (DOH)

Module Slot	Module Assignment
1-8	ATU-Cs only
9	Subtending host module
10	Network interface module (primary)
11	Optional network interface module (for redundancy)
12	System controller module (primary)
13-20	ATU-Cs only
21-28	ATU-Cs only
29	Optional subtending host module (for redundancy)
30	Optional system controller module (for redundancy)
31-38	ATU-Cs only

Module Slot	Module Assignment
1-10	LIM modules only
11	LIM controller module
12	Optional LIM controller module (for redundancy)
13-22	LIM modules only

Module Slot	Module Assignment
1-10	POTS modules only
11	POTS controller (future)
12	Unused (blank panel)
13-22	POTS modules only

Table 3-1: Multiplexer Chassis Slot Assignments (DOH)

Module Slot Module Assignment

1-8

ATU-Cs only

9

Subtending host module

10

Network interface module (primary)

11

Optional network interface module (for redundancy)

12

System controller module (primary)

13-20

ATU-Cs only

21-28

ATU-Cs only

29

Optional subtending host module (for redundancy)

30

Optional system controller module (for redundancy)

31-38

ATU-Cs only

Table 3-2: LCC Slot Assignments (DOH)

Module Slot Module Assignment

1-10

LIM modules only

11

LIM controller module

12

Optional LIM controller module (for redundancy)

13-22

LIM modules only

Table 3-3: PSC Slot Assignments (DOH)

Module Slot Module Assignment

1-10

POTS modules only

11

POTS controller (future)

12

Unused (blank panel)

13-22

POTS modules only

The following is a sample application of a 5:1 concentration for a DOH (standard configuration) of a 6100 system.

Figure 3-2: Digital Off-Hook Standard Configuration (5:1 Concentration)

3.2 Digital Off-Hook (Entry-Level Configuration)

In a single MC containing ATU-Cs and LIMs, the slot configurations in this section are required for chassis operation. Figure 3-3 shows slot number assignments and a sample configuration. Table 3-4 and Table 3-5 describe the various options for slot assignments.

The DOH entry-level configuration can also be used as a remote terminal 6100 option. In this configuration, LIMs can be placed in the MC, thereby eliminating the need for a separate LCC and its resulting space requirements at the remote site.

Note This configuration will be supported in a future release.

The "Installation - DOH Entry-Level" chapter details the installation procedures for this configuration.

Figure 3-3: Chassis Slot Configuration Options (Digital Off-Hook Entry-Level)

Module Slot	Module Assignment
1-2	LIMs or ATU-Cs
3-7	ATU-Cs only
8	ATU-C or LIM power module
9	Subtending host module
10	Network interface module
11	Optional network interface module (for redundancy)
12	System controller module
13	ATU-C or LIM power module (for redundancy)
14-18	ATU-Cs only
19-20	LIMs or ATU-Cs
21-28	LIMs or ATU-Cs
29	Optional subtending host module (for redundancy)
30	Optional system controller module (for redundancy)
31-38	LIMs or ATU-Cs

Table 3-4: MC Slot Assignments (DOH Entry-Level)

Module Slot Module Assignment

1-2

LIMs or ATU-Cs

3-7

ATU-Cs only

8

ATU-C or LIM power module

9

Subtending host module

10

Network interface module

11

Optional network interface module (for redundancy)

12

System controller module

13

ATU-C or LIM power module (for redundancy)

14-18

ATU-Cs only

19-20

LIMs or ATU-Cs

21-28

LIMs or ATU-Cs

29

Optional subtending host module (for redundancy)

30

Optional system controller module (for redundancy)

31-38

LIMs or ATU-Cs

Note Anytime there is a LIM present in the MC, a LIM power module must be provisioned.

Module Slot	Module Assignment
1-10	POTS modules only
11	POTS controller (future)
12	Unused (blank panel)
13-22	POTS modules only

Table 3-5: PSC Slot Assignments (DOH Entry-Level)

Module Slot Module Assignment

1-10

POTS modules only

11

POTS controller (future)

12

Unused (blank panel)

13-22

POTS modules only

3.3 Direct Connect Configuration

An MC with all ATU-Cs (no LIMs or LCC) and a POTS module is designed for dedicated 1:1 concentration. Figure 3-4 shows this configuration. Then Table 3-6 and Table 3-7 describe slot assignments for the multiplexer and PSC.

The "Installation - Direct Connect" chapter details the installation procedures for this configuration.

Figure 3-4: Chassis Slot Configuration Options (Direct Connect)

Module Slot	Module Assignment
1-8	ATU-Cs only
9	Subtending host module
10	Network interface module
11	Optional network interface module (for redundancy)
12	System controller module
13 - 20	ATU-Cs only
21 - 28	ATU-Cs only
29	Optional subtendng host module (for redundancy)
30	Optional system controller module (for redundancy)
31 - 38	ATU-Cs only

Module Slot	Module Assignment
1 - 10	POTS modules only
11	POTS controller module (future)
12	Unused (blank faceplate)
13 - 22	POTS modules only

Table 3-6: MC Slot Assignments (Direct Connect)

Module Slot Module Assignment

1-8

ATU-Cs only

9

Subtending host module

10

Network interface module

11

Optional network interface module (for redundancy)

12

System controller module

13 - 20

ATU-Cs only

21 - 28

ATU-Cs only

29

Optional subtendng host module (for redundancy)

30

Optional system controller module (for redundancy)

31 - 38

ATU-Cs only

Table 3-7: PSC Slot Assignments (Direct Connect)

Module Slot Module Assignment

1 - 10

POTS modules only

11

POTS controller module (future)

12

Unused (blank faceplate)

13 - 22

POTS modules only

3.4 Subtended 6100s

Up to six Cisco 6100s can be subtended to one subtending host 6100 connecting to the ATM network backbone. The following figure depicts a subtended node.

Figure 3-5: Subtended 6100 Network

Subtended 6100s are first provisioned as DOH standard or direct connect configurations and cabled according to the instructions in the "Installation - DOH Standard" chapter and "Installation - Direct Connect" chapter. Follow the instructions in the "Installation - Subtended Network" chapter to complete the installation for a subtended network.

Figure 3-6 shows a subtending MC and a subtended MC with corresponding slot number assignments. The DS3 network interface module is installed in slot 10 of the subtended node MC chassis. The DS3 STM is installed in slot 9 of the subtending MC chassis. The subtending host MC is the one that is connected directly to the ATM switch.

Figure 3-6: Subtending Host and Subtended Node Chassis Views

The slot assignments for these chassis are the same as shown in Table 3-1 if the 6100 is configured for DOH or as shown in Table 3-6 if the 6100 is configured for direct connect.

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