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Cisco 1700 Series Modular Access Routers

Cisco 4-Port High-Density FXS/DID Analog VIC for Cisco 1700

Table Of Contents

Data Sheet

Introduction

DSP Requirements for the Cisco VIC-4FXS/DID

Key Benefits and Technical Specifications


Data Sheet


Cisco 4-Port High-Density FXS/DID Analog Voice Interface
Card for the Cisco 1700 Series Modular Access Routers

The Cisco 1700 Modular Access Router is designed to provide a cost-effective integrated access platform for small and medium-sized businesses and small enterprise branch offices. It supports advanced services e-Business features such as VPNs; secure Internet, intranet, and extranet access with optional firewall technology; broadband DSL and cable connectivity; and multiservice voice/video/data/fax integration.

Figure 1

Cisco 4-Port FXS/DID VIC with Caller ID Support in FXS mode

Introduction

The 4-port high-density FXS/DID VIC1 can support up to 4 foreign-exchange-station (FXS) ports for directly connecting phones or fax machines, or it can be used to connect up to four direct-inward-dial (DID) analog trunks, providing customers the flexibility they need for their unique business environment (refer to Figure 1). Each port on the 4-Port FXS/DID VIC is selectable for use in either FXS or DID mode when using phones with 1 REN þload or less2 . The 4-Port FXS/DID VIC is the same size as the existing two-port voice interface cards (VICs), allowing it to slide into either WIC/VIC slot or VIC slot in Cisco 1751 and 1760. The Cisco 1751 can support three VIC-4FXS/DID cards with a maximum of four ports in DID mode. The Cisco 1760 can support four VIC-4FXS/DID cards with a maximum of eight ports in DID mode. Figure 2 shows a typical application of 4-port VIC-FXS/DID in a small enterprise branch office with KTS or small PBX. The VIC-4FXS/DID in the Cisco 1700 is used to connect analog phones or fax machines. The long-distance calls between small enterprise branch offices and headquarters are carried by IP network, while the local calls are carried by PSTN, which also provide backup to the IP network.

DSP Requirements for the Cisco VIC-4FXS/DID

For Cisco 1751 and 1760 routers, the medium-complexity analog digital-signal-processor (DSP) image is the factory default for supporting the 4-Port FXS/DID VIC. This DSP image provides support for four voice channels (of G.711, G.729a, or G.726) for each DSP chip. For example, the Cisco PVDM-256K-4 DSP Module has one DSP chip and is, therefore, capable of supporting four voice channels on the 4-Port FXS/DID VIC. The medium-complexity analog DSP software image supports four channels of G.711, G.729a, G.726, fax relay, or modem or fax pass-through, and it provides support for 32-msec echo cancellation per DSP chip.

Figure 2

Small Offices with POTS Phones and Fax Machines

The 4-Port FXS/DID VIC also support the high-complexity analog DSP software image. This DSP image provides support for two voice channels (of G.711, G.729, G.723.1, G.728, or G.726) for each DSP chip. Therefore, a Cisco PVDM-256K-8 Module (two DSP chips) is required to support four voice channels on the 4-Port FXS/DID VIC. The high-complexity analog DSP image supports two channels of G.711, G.729, G.726, G.728, G.723.1, fax relay, or modem or fax pass-through, and it provides support for 32-msec echo cancellation per DSP chip.

For DSP requirements on the Cisco 1751 and 1760 routers with Cisco IOS® 12.2(8)YN or later releases, refer to the DSP Calculator at the following URL:

http://www.cisco.com/pcgi-bin/Support/DSP/dsp-calc.pl

Key Benefits and Technical Specifications

Table 1 provides the benefits and specifications and Table 2 provides the Electro Magnetic Compatibility (EMC) standards for the 4-Port FXS/DID VIC.

Table 1  Benefits and Specifications of the Cisco 4-Port FXS/DID VIC 

Part Number: VIC-4FXS/DID

4-port FXS or DID voice/fax interface card with caller ID support in FXS mode only (DID for United States, Canada, and other countries)

Interface type

FXS and DID trunk

Supported platforms

Cisco 1751 and Cisco 1760

First Cisco IOS® Release

Cisco IOS 12.2(8)YN (this is a short lived Early Deployment (ED) release which will merge into IOS 12.3(1)T)

Minimum Feature Sets

IP/VOX PLUS

Ringer Equivalence Number (REN)

A maximum of five REN loads can be supported on each voice port

A maximum of eight REN loads can be supported on each 4-port FXS/DID VIC

A maximum of twenty REN loads can be supported on each Cisco 1751 and 1760 router

Safety

UL 60950 (United States), CSA C22.2 No. 60950-00 (Canada), EN 60950 (Europe), AS 3260 (Australia), TS 001 (Australia))

FXS homologation

United States (TIA/EIA-1S-968), Canada (CS-03 I)

DID homologation

United States (TIA/EIA-1S-968), Australia (ACIF S002/S003)

EMC

Refer to Table 2

Spare

Part number VIC-4FXS/DID=

Signaling modes

FXS—Loop Start

DID—Wink, Immediate, and Delay Dial

Address Signaling formats

In-band dual tone multifrequency (DTMF)

Out-of-band pulse (10/20 pps)

Tone disconnect supervision

DID—Power denial (caller party control, far-end disconnect)

Ringing frequencies

20 Hz, 50 Hz

Physical connector

RJ-11

Number of connectors

4

Mean time between failure (MTBF)

2,131,306 hours


Table 2  EMC for the Cisco 4-Port FXS/DID VIC

FCC Part 15 Class B

Emissions

EN55022: 1998, Class B

Emissions

EN61000-3-2: 1995

Harmonics

EN61000-3-3: 1995

Flicker

EN50082-1: 1997

Immunity

EN55024: 1998

Immunity

EN61000-3-2

Harmonics

EN61000-3-3

Flicker

EN61000-4-2

ESD

EN61000-4-3

RF fields

EN61000-4-4

EFT

EN61000-4-5

Surge

EN61000-4-6

Conducted RF

EN61000-4-11

Voltage dips/sags/interruptions


1 VIC-4FXS/DID will not be able to register with Cisco CallManager currently.
2 If the REN load on any FXS port is greater than 1 REN, all four ports of a single VIC-4FXS/DID card must be configured as FXS; The mix of DID and FXS is not allowed in this case.