Cisco VIC-2FXS - 3600 Voice Interface Card-Fxs... Manuale di istruzioni

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Connecting Voice Interface Cards to the Network

Revised: 11/07/2009, OL-12847-01

This document describes how to connect Cisco voice interface cards to your network. It contains the

following sections:

•Grounding Requirements for Voice Interface Cards, page 1

•Foreign Exchange Station (FXS) Interface Cards, page 3

•Foreign Exchange Office (FXO) Interface Cards, page 5

•Receive and Transmit (E&M) Interface Cards, page 8

•FXS, FXO, and E&M Interface Card LEDs, page 9

•ISDN BRI Interface Cards, page 9

•Analog Direct Inward Dial (DID) Interface Cards, page 13

•Multiflex Trunk Interface Cards, page 15

•Centralized Automated Message Accounting Trunk Protocol Interface Cards, page 18

•Related Documentation, page 19

•Obtaining Documentation, Obtaining Support, and Security Guidelines, page 21

Grounding Requirements for Voice Interface Cards

This section tells where to find instructions on how to properly ground voice interface cards on the

following platforms:

•Cisco 1700 Series Routers

•Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers

•Cisco ICS 7750

Warning

Do not work on the system or connect or disconnect cables during periods of lightning activity.

Warning

To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telephone-network

voltage (TNV) circuits. LAN ports contain SELV circuits, and WAN ports contain TNV circuits. Some

LAN and WAN ports both use RJ-45 connectors. Use caution when connecting cables.

Connecting Voice Interface Cards to the Network

Pinout and Cabling Specifications

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Warning

To reduce the risk of fire, use only No. 26 AWG or larger telecommunication line cord.

Warning

Hazardous network voltages are present in WAN ports regardless of whether power to the unit is OFF

or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables,

detach the end away from the unit first.

Cisco 1700 Series Routers

Grounding on a Cisco 1700 series router is done on the router chassis itself, not on the voice interface

cards. For information on chassis grounding on Cisco 1700 series routers, see the hardware installation

guide for your router.

Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers

The requirements in this section apply to only the Cisco 2600 series, Cisco 3600 series, and Cisco 3700

series routers.

The cards in this chapter are suitable for exposed plant lead connection. However, the host router chassis

must have a permanent protective earth connection before you connect a voice interface card to an

exposed plant lead. Make sure that a permanent earth connection is in place before installing the card.

If you find that a router chassis does not have an earth connection and you do not have a grounding kit,

take one of the following actions:

•Order and install a NEBS Level 3/ETSI Compliance Kit.

•Install an equivalent permanent protective earth connection, using the method described in the

installation guide Installing the Grounding Lug on Cisco 2600 and Cisco 3600 Series Routers.

Cisco ICS 7750

The Cisco ICS 7750 chassis has a grounding lug that needs to be properly connected using a green and

yellow 14 American Wire Gauge (AWG) grounding wire. See the “Installing the Cisco ICS 7750”

chapter in the Cisco ICS 7750 Installation and Configuration Guide for your software release at:

http://www.cisco.com/en/US/products/hw/voiceapp/ps967/prod_installation_guides_list.html

Pinout and Cabling Specifications

Note See Cisco Modular Access Router Specifications for network-end connectors and pinouts of the cables

connecting voice cards. Look under the type of interface card.

Connecting Voice Interface Cards to the Network

Foreign Exchange Station (FXS) Interface Cards

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Foreign Exchange Station (FXS) Interface Cards

A Foreign Exchange Station (FXS) interface connects directly to a standard telephone, fax machine, or

similar device. This interface supplies ringing voltage, dial tone, and so on to the station. The ports are

shown in Figure 1, Figure 2, and Figure 3.

Caution To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety,

connect the 2-port FXS cards (VIC-2FXS and VIC2-2FXS) and 4-port FXS/DID cards (VIC-4FXS/DID)

only to intrabuilding or non-exposed wiring or cabling. The intrabuilding cable must be shielded and the

shield must be grounded at both ends.

Note Each port on the 4-port FXS/DID VIC can be configured as either Foreign Exchange Station (FXS) or

Direct Inward Dial (DID) when it is used with phones with a Ringer Equivalence Number (REN) load

of 1 or less.

If the REN load on any port is greater than 1, all four ports must be configured as either FXS or DID.

For information about using analog DID with the 4-port FXS/DID VIC, see the “Analog Direct Inward

Dial (DID) Interface Cards” section on page 13.

Note Cisco 2600XM series, Cisco 2691, Cisco 2800 series, Cisco 3600 series, Cisco 3700 series, and

Cisco 3800 series routers support DID on the 4-port FXS/DID cards in Cisco IOS Release 12.3(14)T and

later.

Note The Cisco 1751 router can support three 4-port FXS/DID VICs, up to a maximum of four DID ports. The

Cisco 1760 router can support four 4-port FXS/DID VICs, up to a maximum of eight DID ports.

Note The Cisco ICS 7750 also supports 8 FXS ports on the analog station interface 81 (ASI 81), and 16 FXS

ports on the ASI 160. See the “Processor Cards Feature Summary” chapter in the Cisco ICS 7750 System

Description document.

Figure 1 2-Port FXS Card Front Panel (VIC-2FXS)

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Connecting Voice Interface Cards to the Network

Foreign Exchange Station (FXS) Interface Cards

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Figure 2 2-Port FXS Card Front Panel (VIC2-2FXS)

Figure 3 4-Port FXS/DID Card Front Panel (VIC-4FXS/DID)

Connecting FXS Cards

Use a standard straight-through RJ-11 modular telephone cable to connect a VIC-2FXS,

VIC-4FXS/DID, or VIC2-2FXS to a telephone or fax machine.

Warning

This equipment contains a ring signal generator (ringer), which is a source of hazardous voltage. Do

not touch the RJ-11 (phone) port wires (conductors), the conductors of a cable connected to the RJ-11

port, or the associated circuit-board when the ringer is active. The ringer is activated by an incoming

call.

Warning

For connections outside the building where the equipment is installed, the following ports must be

connected through an approved network termination unit with integral circuit protection: FXS.

Note Ports on this interface card are colored gray.

Step 1 Confirm that the router is still turned off.

Step 2 Connect one end of the straight-through RJ-11 cable to an RJ-11 port on the card. (See Figure 4.)

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Connecting Voice Interface Cards to the Network

Foreign Exchange Office (FXO) Interface Cards

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Figure 4 Connecting an FXS Card

Step 3 Connect the other end of the cable to the RJ-11 port on the telephone or fax machine.

Foreign Exchange Office (FXO) Interface Cards

A Foreign Exchange Office (FXO) interface connects local calls to a central office or PBX. This is the

interface a standard telephone provides. This type of card is illustrated in Figure 5, Figure 6, and

Figure 7.

The VIC-2FXO and VIC-2FXO-M1 interface cards are intended for use in North America (United

States, Canada, and Mexico).

The VIC-2FXO-EU and VIC-2FXO-M2 interface cards are intended for use in Europe.

The VIC-2FXO-M3 interface card is intended for use in Australia.

The VIC2-2FXO and VIC2-4FXO interface cards are software-configurable for all regions (see Figure 6

and Figure 7).

Caution To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety,

connect the 2-port FXO card (VIC2-2FXO) only to intra-building or non-exposed wiring or cabling. The

intrabuilding cable must be shielded and the shield must be grounded at both ends.

Warning

This equipment contains a ring signal generator (ringer), which is a source of hazardous voltage. Do

not touch the RJ-11 (phone) port wires (conductors), the conductors of a cable connected to the RJ-11

port, or the associated circuit-board when the ringer is active. The ringer is activated by an incoming

call.

Straight-through

RJ-11-to-RJ-11 cable

RJ-11 ports

Fax machine

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Connecting Voice Interface Cards to the Network

Foreign Exchange Office (FXO) Interface Cards

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Warning

For connections outside the building where the equipment is installed, the following ports must be

connected through an approved network termination unit with integral circuit protection.

FXO

Figure 5 2-Port FXO Card Front Panel (VIC-2FXO)

Figure 6 2-Port FXO Card Front Panel (VIC2-2FXO)

Figure 7 4-Port FXO Card Front Panel (VIC2-4FXO)

Setting Jumpers on the 2-Port FXO Card

Note This information does not apply to the VIC2-2FXO card.

The FXO voice interface card includes two jumper headers, W3 and W4, to set loop-start or ground-start

mode. One jumper configures each FXO port. The default setting is loop-start, which should be

satisfactory in most installations. In this setting, jumpers are placed over positions 2 and 3 of headers

W3 and W4.

Most modern central office equipment, such as DMS-100 and 5ESS switches, provides calling party

control (CPC) and Ring on Seize on loop-start lines. CPC allows quicker disconnection, and Ring on

Seize minimizes glare (collision of inbound and outbound calls on the same interface).

If your central office does not provide these features on loop-start, you may want to configure the FXO

card for ground-start operation instead by moving the jumpers to positions 1 and 2.

For proper operation, both jumpers on the VIC-2FXO card must be configured identically.

Note This setting does not apply to VIC-2FXO-EU and VIC-2FXO-M2 interface cards.

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Connecting Voice Interface Cards to the Network

Foreign Exchange Office (FXO) Interface Cards

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Connecting FXO Cards

Use a straight-through RJ-11 cable to connect the FXO voice interface card to the PSTN or PBX through

a telephone wall outlet.

Note Ports on this interface card are colored pink.

Step 1 Confirm that the router is still turned off.

Step 2 Connect one end of the straight-through RJ-11 cable to an RJ-11 port on the card. (See Figure 8.)

Figure 8 Connecting an FXO Card

Step 3 Connect the other end to an RJ-11 telephone wall outlet.

Note If you have specified the use of a private line automatic ringdown (PLAR) off-premises extension (OPX)

connection mode for an FXO voice port (with loop resistance less than 8000 Ohm), you must ensure

that the soft-offhook option is enabled on the port.

This option allows a stepped offhook resistance during seizure which avoids overloading the circuit

during offhook in the event that ringing voltage is present on the circuit at the same time as the trunk

seizure. The stepped offhook resistance is initially set to 800 Ohms, then adjusts to 50 Ohms when

ringing voltage is not present.

To enable soft-offhook command on the port, and to access the connection command with plar opx

syntax, see the Cisco Command Lookup Tool.

Straight-through

RJ-11-to-RJ-11 cable

RJ-11 ports

RJ-11 wall jack

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Connecting Voice Interface Cards to the Network

Receive and Transmit (E&M) Interface Cards

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Receive and Transmit (E&M) Interface Cards

RecEive and transMit (E&M) is a signaling technique for two-wire and four-wire telephone and trunk

interfaces. The E&M interface typically connects remote calls from an IP network to a PBX. The cards

are illustrated in Figure 9 and Figure 10.

Caution To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety,

connect the 2-port E&M card (VIC2-2E/M) only to intra-building or non-exposed wiring or cabling. The

intrabuilding cable must be shielded and the shield must be grounded at both ends.

Figure 9 2-Port E&M Card Front Panel (VIC-2E/M)

Figure 10 2-Port E&M Card Front Panel (VIC2-2E/M)

Connecting E&M Interface Cards

Use a straight-through RJ-48C cable to connect the E&M card to the PSTN or PBX through a telephone

wall outlet.

Caution Do not connect an E&M interface directly to the PSTN.

Note Ports on the E&M voice interface card are colored brown.

Step 1 Confirm that the router is still turned off.

Step 2 Connect one end of the straight-through RJ-48C-to-RJ-48C cable to an RJ-48C port on the card. (See

Figure 11.)

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Connecting Voice Interface Cards to the Network

FXS, FXO, and E&M Interface Card LEDs

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Figure 11 Connecting the 2-Port E&M Card

Step 3 Connect the other end of the cable to an RJ-48C wall outlet.

FXS, FXO, and E&M Interface Card LEDs

Each voice interface card has IN USE LEDs, one for each port. These LEDs have three states: green

when active, off when ready for use, and amber when not ready for use. Figure 12 shows a voice interface

card with an E&M interface as an example.

Figure 12 Voice Interface Card LEDs

ISDN BRI Interface Cards

The ISDN BRI S/T voice interface card provides a client-side (TE) ISDN S/T physical interface for

connection to an NT1 device terminating an ISDN telephone network. Each port on the interface card

can carry two voice calls (one over each ISDN B channel), for a total of four calls per ISDN BRI card.

ISDN BRI NT/TE voice interface cards (VIC-2BRI-NT/TE and VIC2-2BRI-NT/TE) have the same

capabilities as the S/T card, but can also be configured to provide a network termination (NT) interface

with phantom power.

Straight-through

RJ-48C-to-RJ-48C cable

RJ-48C ports

RJ-48C wall jack

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LED LED

Connecting Voice Interface Cards to the Network

ISDN BRI Interface Cards

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The Cisco 1751 and Cisco 1760 routers, and the Cisco ICS 7750 platform support both ISDN BRI

NT/TE voice interface cards. You can install these cards in any interface card slot in these platforms.

These platforms do not support the ISDN BRI S/T voice interface card.

The ISDN BRI NT/TE cards are illustrated in Figure 13 and Figure 14.

Caution To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety,

connect the 2-port ISDN BRI card (VIC2-2BRI-NT/TE) only to intra-building or non-exposed wiring or

cabling. The intrabuilding cable must be shielded and the shield must be grounded at both ends.

Figure 13 2-Port ISDN BRI Card Front Panel (VIC-2BRI-NT/TE)

Figure 14 2-Port ISDN BRI Card Front Panel (VIC2-2BRI-NT/TE)

ISDN BRI Card Considerations

Note Cisco ISDN BRI interface cards support voice ISDN traffic only.

Note The ISDN BRI restrictions in this section do not apply to the VIC2-2BRI-NT/TE voice interface cards.

Note The ISDN BRI restrictions in this section do not apply to the Cisco 1751, Cisco 1760, or Cisco ICS 7750

platforms.

To use all four voice channels, you must install the ISDN BRI card in slot 0 of a two-slot voice network

module (NM-2V). Slot 1 should remain empty.

Note If slot 0 is unoccupied, the system treats it as a pair of analog voice ports.

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