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Chapter 2

Connecting Your 3000 Series D Secure Gateway Router

This chapter provides the steps for mounting your 3000 Series D in a rack and setting up your hardware connections. It has the following sections.

Before You Begin

What's Next?

Connecting to an Ethernet Network

Connecting to a T1/E1 Digital Voice Network

Connecting to a DDS Data Network

Connecting to an E1 Data Network

Connecting to a T1 Data Network

Connecting to an SDSL Data Network

Connecting to an ISDN Line

Connecting to a WAN

Connecting to a PC

Before You Begin

 You can order your 3000 Series D Secure Gateway Router either with the modules you want already installed, or you can order the modules separately and install them yourself. For instructions on installing the optional modules, see Appendix B.

You have the option of mounting your 3000 Series D in a rack. See Mounting the 3000 Series D in a Rack on page 9.

Depending on the modules installed in your particular 3000 Series D, you need the following cables. With the exception of a console cable to connect a PC to your 3000 Series D, these cables are not supplied.

To connect . . . You need . . .
DDS module

RJ-48S, 8-conductor straight-through cable.

Ethernet network

Ethernet (Unshielded Twisted Pair) straight-through cable.

Fractional E1 module

Cable with an RJ-48C connector (TIA 568B compatible).

Fractional T1 module

Cable with an RJ-48C connector (TIA 568B compatible).

ISDN module

RJ-45, 8-conductor straight-through cable.

For ISDN S/T modules, you also need an external NT1 device and the appropriate cable to connect the NT1 to the ISDN wall jack. The cable for this connection depends on the NT1 device.

SDSL module

Cable with an RJ-48C connector (TIA 568B compatible).

T1/E1 digital voice module

 The type of cable you use depends on the interface type that the equipment you connect to supports. Compliance with applicable regulations depends on the use of shielded cables.

To a PC or terminal

Console null-modem cable with adapter to connect a PC or terminal to your gateway router. (Supplied with your 3000 Series D.)

WAN module

 The appropriate serial WAN cable(s).

The 3000 Series D supports only Nx Networks WAN cables. See Selecting a WAN Cable on page 20 for a list of WAN cables.

Mounting the 3000 Series D in a Rack

You can mount the 3000 Series D in a rack. The 3000 Series D comes with two mounting brackets and four screws. You can attach the brackets to connect either the front of the unit or the back of the unit to the rack.

What's Next?

The following sections show how to connect your gateway router to each type of network.

To connect to . . . See page . . .
DDS data network

15

E1 data network

15

Ethernet network

11

ISDN line

17

SDSL data network

16

T1 data network

16

WAN

20

T1/E1 voice network

12

PC (Console)

24

Connecting to an Ethernet Network

There are three ways to connect your 3000 Series D to an Ethernet:

Using the Fixed Ethernet Connector or an Ethernet Voice Module

 To connect your 3000 Series D to an Ethernet network using the fixed Ethernet connector or the Ethernet voice module,

1. Connect one end of an Ethernet (UTP) straight-through cable to the ETH connector in the 3000 Series D fixed slot.

2. Connect the other end of the cable to an Ethernet hub or switch.

Note: The Ethernet port auto-negotiates to 10/100 Mbps and half/full duplex depending on the capabilities of the attached hub or switch.

Using the Ethernet Router Module

To connect the Ethernet router module,

1. Connect one end of the Ethernet cable to the ethernet connector on the Ethernet module.

2. Connect the other end of the cable to an Ethernet hub or switch.

3. Set the PC/Hub crossover switch on the module to HUB.

Note: The Ethernet port on the Ethernet router module operates at 10 Mbps and does not support auto-negotiation for half/full duplex operation.

Connecting to a T1/E1 Digital Voice Network

The type of cable you use depends on the interface type that the equipment you connect to supports. For compliance with applicable regulations, you need to use shielded cables.

Connecting to a PBX

To connect to a digital PBX,

1. Connect one end of the cable to the RJ-45 connector on the digital voice module.

2. Connect the other end of the cable to the PBX.

Connecting to an E1 Network Interface Box

To connect the E1 voice module to an E1 network,

1. Attach one end of a grounding wire to the GND (ground) on the E1 module and then attach the other end to a system ground. (Optional)

2. Connect one end of the unshielded twisted pair (UTP) RJ-48C cable to the E1 connector on the E1 module.

3. Connect the other end of the cable to the service provider's network interface box.

Connecting to a T1 RJ-48C Jack

To connect the T1 voice module to a T1 network,

1. Connect one end of the unshielded twisted pair (UTP) RJ-48C cable to the T1 connector on the T1 DSU/CSU module.

2. Connect the other end of the cable to an RJ-48C network interface jack provided by your service provider.

Connecting to a DDS Data Network

To connect the DDS router module to a leased-line DDS network,

1. Connect one end of the unshielded twisted pair (UTP) RJ-48S cable to the CSU/DSU connector on the DDS CSU/DSU module.

2. Connect the other end of the cable to an RJ-48S network interface jack provided by your service provider.

The following figure shows the connection between the DDS module and a DDS network.

Connecting to an E1 Data Network

To connect the E1 router module to an E1 network,

1. Attach one end of a grounding wire to the GND (ground) on the E1 module and then attach the other end to a system ground. (Optional)

2. Connect one end of the unshielded twisted pair (UTP) RJ-48C cable to the E1 connector on the E1 module.

3. Connect the other end of the cable to the service provider's network interface box.

Connecting to a T1 Data Network

To connect the T1 router module to a T1 network,

1. Connect one end of the unshielded twisted pair (UTP) RJ-48C cable to the T1 connector on the T1 DSU/CSU module.

2. Connect the other end of the cable to an RJ-48C network interface jack provided by your service provider.

Connecting to an SDSL Data Network

To connect the SDSL router module to a Digital Subscriber Loop Access Multiplexor (DSLAM),

1. Connect one end of the unshielded twisted pair (UTP) RJ-48C cable to the connector on the SDSL module.

2. Connect the other end of the cable to an RJ-48C network interface jack provided by your service provider.

Connecting to an ISDN Line

How you make the connection from your 3000 Series D ISDN router module to an ISDN line depends on whether your ISDN module is an ISDN U or ISDN S/T module. Check the back panel of your gateway router to identify the ISDN module installed.

ISDN U Module

The ISDN U module has a built-in Network Termination (NT1) device. The NT1 provides for a direct connection to the ISDN network. When you use the ISDN U module, you cannot use any other ISDN device on the ISDN line.

To connect your ISDN U module,

1. Connect one end of the RJ-45 ISDN cable (not supplied with your router) to the RJ-45 ISDN connector on your ISDN U module.

2. Connect the other end of the ISDN cable directly into an ISDN wall jack.

CAUTION:

You can also use an RJ-11 cable with a regular analog telephone to connect the 3000 Series D to the ISDN wall jack.
Nx Networks discourages using an RJ-11 cable for this purpose, however, because you may inadvertently plug the 3000 Series D into a normal telephone jack rather than into an ISDN wall jack. This can damage the 3000 Series D.

ISDN S/T Module

Note: You must connect to the ISDN network via a line isolation unit (NT1 device).

 The S/T module does not have a built-in NT1 device. You must provide an external NT1 device. A typical NT1 device looks like a small modem and has S/T port(s) and a U interface on the back of it.

The ISDN S/T module can co-exist with other ISDN equipment using the same ISDN line.

To connect your ISDN S/T module,

1. Connect one end of the RJ-45 ISDN cable (not supplied with your router) to the RJ-45 ISDN connector on the ISDN S/T module.

2. Connect the other end of the ISDN cable to the S/T port on the NT1 device.

3. Set the S/T terminator switch on the ISDN module to the appropriate position. See Setting the S/T Switch on page 19.

4. Connect one end of an ISDN cable to the NT1 U interface port and the other end to the ISDN wall jack. The ISDN cable for this connection is dependent on your NT1 device.

Setting the S/T Switch

There is an S/T switch on the ISDN S/T module. You can slide the switch to 0 or 1. Setting the switch to 0 means that no terminating resistor is in use. Setting the switch to 1 means that the ISDN S/T module terminates the ISDN cable with a 100-ohm resistor.

For point-to-point connections (shown in the following figure), set the switch to 1. For all other configurations, consult your NT1 manual for the proper setting. In a point-to-point connection, there is one ISDN device on an ISDN line.

Connecting to a WAN

To connect your 3000 Series D to the Internet or another WAN using the standard WAN router module, use Point-to-Point Protocol (PPP) over either a dedicated (leased) or a dialup telephone line or use a Frame Relay network.

Selecting a WAN Cable

You must purchase the appropriate cable from a Nx Networks vendor. The type of WAN cable you use depends on the interface type that the equipment you connect to supports.

To connect to a device that has a

To be sure that you are using the proper cable to connect your WAN module, check the part number on the cable with the information in the following table.
To connect the standard WAN
module to . . . 		Use cable type . . . Part Number
an external asynchronous modem.

 RS-232 DTE

 P4730-09

an external synchronous modem, a modem eliminator, or a CSU/DSU.

(Whether you use RS-232, V.35, or X.21, depends on which type of communication the equipment you connect to supports.)

RS-232 DTE

V.35 DTE

X.21 DTE

 P4730-09

P4730-08

P4730-10

another router that has a DTE connector. (In this case, you must set up the 3000 Series D to provide clocking.)

(Whether you use RS-232, V.35, or X.21, depends on which type of communication the equipment you connect to supports.)

RS-232 DCE

V.35 DCE

X.21 DCE

 P4730-12

P4730-11

P4730-13

The following three figures show possible DTE/DCE connections.

This figure shows a DTE cable connection to a device with a DCE connector.

This figure shows DTE cable connections to a device (modem eliminator) with a DCE connector.

This figure shows a DCE cable connection to a device with a DTE connector.

Connecting to a PPP WAN

To connect the WAN module to a PPP WAN,

1. Connect the module to an external modem.

Note: The 3000 Series D support both asynchronous and synchronous modems.

2. Connect the modem to the telephone line with an RJ-11 cable.

Connecting to a Frame Relay WAN

To connect the WAN module to a Frame Relay WAN,

1. Connect the module to an external Channel Service Unit/Digital Service Unit (CSU/DSU).

You can purchase the appropriate cable from Nx Networks. See Selecting a WAN Cable on page 20.

Note: The 3000 Series D works with any of the major CSU/DSU products on the market.

2. Connect the CSU/DSU to the Frame Relay switch.

Connecting to a PC

To configure and monitor the 3000 Series D through its console port, you can connect a PC or terminal to the console port. (You can also configure and monitor the router by connecting to its Ethernet port. See Configuring Your 3000 Series D Secure Gateway Router on page 27.)

To connect a PC or terminal locally to the gateway router, use the 9-pin to 9-pin null modem cable that comes with the 3000 Series D and, if needed, the 9-pin to 25-pin adapter. The following figure shows how to connect a PC or terminal directly to the 3000 Series D.

1. Connect one end of the null-modem cable to the Console connector on the back panel of your gateway router.

2. Connect the other end of the cable to your PC.


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