Cisco 450 Handbuch

Cisco 450 Voice Gateway Hardware Installation Guide

First Published: 2018-10-15

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CHAPTER 1

Overview of Cisco VG450 Voice Gateway

Cisco High-Density Analog Voice Gateway provide enterprises, managed services providers, and service

providers the ability to directly connect public-switched telephone networks (PSTNs) and existing telephony

equipment to Cisco 4000 Series Integrated Services Routers. These fixed-port (FXS and FXO) modules

provide Dual-Tone Multifrequency (DTMF) detection, voice compression and decompression, call progress

tone generation, Voice Activity Detection (VAD), echo cancellation, and adaptive jitter buffering. Cisco

VG450 Voice Gateway is a high-density analog voice gateway. It is an intermediate path that enables TDM

to IP transition.

The Cisco VG450 Voice Gateway supports the following interfaces:

• Gigabit Ethernet (GE)

• USB

• Network Interface Module (NIM)

• Single-Wide Service Module (SWSM) interface

• Double-Wide Service Module (DWSM) interface

This chapter contains the following sections:

•Features and Benefits of Cisco VG450 Voice Gateway, on page 1

•Slot, Bay, and Ports, on page 4

•Cisco VG450 Voice Gateway Chassis, on page 6

•Technical and Compliance Specifications, on page 6

•Platform and Software Requirements, on page 8

Features and Benefits of Cisco VG450 Voice Gateway

Cisco VG450 Voice Gateway provides VoIP connectivity to analog devices, such as analog desk phones,

analog conference room phones, fax machines and modems. Cisco 450 Voice Gateway provides several

improvements from the previous high-density analog and digital extension modules (EVMs), in the following

ways:

•On-board Digital Signal Processor (DSP)—The FXO and FXS service modules contain an onboard

DSP and don’t require the router to have a dedicated packet voice DSP module (PVDM) on the

motherboard. The DSP on the voice module is necessary for the voice features. It also provides for echo

cancellation of up to 128-ms echo-tail length for demanding network conditions.

•Support for Online Insertion and Removal (OIR)—The FXS and FXO service modules support Online

Insertion and Removal (OIR), reducing the downtime required for new or replacement modules. The

Cisco 450 Voice Gateway Hardware Installation Guide

service modules can be inserted into the SM-X slot on the supported Cisco 4000 Series ISRs without

powering off the router.

•FXS-E (extended loops) support—FXS ports on the new modules support FXS-E with the following

details:

• Higher loop current (35 mA) to accommodate specialty phones

• Longer loop length for loops with 26 AWG wire, up to 11,000 feet (3400 meters)

• Higher ringing voltage (65 Vrms, no load)

Switching between the modes requires reload of the ISR chassis.

Note

•FXO failover bypass ports—A failover bypass port, also called a failover trunk bypass, provides a way

to use designated analog phone ports to make phone calls through the PSTN during a power outage.

In addition to these features, Cisco 450 Voice Gateway supports the following features:

• Caller line ID

• G.711, G.729a, and G.726

• G722, iLBC, GSMAMR-NB, and Internet Speech Audio Codec (iSAC)

• Fax detection, pass-through, and relay (T.38)

• Modem pass-through

• DTMF detection

• Echo cancellation

• Voice activity detection

• Comfort noise generation

• Real-Time Control Protocol (RTCP)

• Acoustic shock protection

• Real-Time Transport Protocol (RTP)

• RFC 4733 Digit Relay

• Noise reduction is on the roadmap

• The FXS features include:

• Support for either FXS or DID functionality

• Message-Waiting Indicator (MWI)

• Cable detection: GR909 line test

• The FXO features include:

• Support for both ground-start and loop-start modes

• Support for FXO CAMA signaling type

• Call Detail Record (CDR) information

• Support for interworking with Cisco Unified Communications Manager (Skinny Client Control Protocol

[SCCP]), H.323, Session Initiation Protocol (SIP), and Media Gateway Control Protocol (MGCP) 0.1

• Cable detection

• Overload protection

Cisco 450 Voice Gateway Hardware Installation Guide

Overview of Cisco VG450 Voice Gateway

Features and Benefits of Cisco VG450 Voice Gateway

Analog Phone Connectivity

Cisco 450 Voice Gateway are ideal for analog phone deployments ranging from centralized to sparsely

concentrated or distributed topologies. Cisco 4000 Series Integrated Services Routers offer many supplementary

analog calling features, depending on the call control and signaling type used. All supplementary analog

features are supported through the FXS and FXO service modules. The analog interface on Cisco 4000 Series

also supports Feature Access Codes (FACs) for invoking supplementary services.

Fax and Modem Connectivity

FXS ports on Cisco 450 Voice Gateway support fax machines and modems. When using fax machines, the

gateways support T.38 fax relay and fax pass-through. T.38 fax relay technologies allow transfer of faxes

across the network with high reliability using less bandwidth than a voice call. All modems can be connected

to the Cisco VG Series Gateways and are transferred over the network using modem pass-through.

Protocols Supported

The voice gateways support the following protocols:

• SCCP

• H.323v4

• MGCP

• SIP

• Real-Time Transport Protocol (RTP)

• Secure Real-Time Transport Protocol (SRTP)

• Trivial File Transfer Protocol (TFTP)

• HTTP server

• Simple Network Management Protocol (SNMP)

• Telnet

• Dynamic Host Configuration Protocol (DHCP)

• DNS

•Cisco Unified Communications Manager or Cisco Unified Communications Manager Express redundancy

support using Hot Standby Router Protocol (HSRP)

• Call survivability: MGCP failover to an H.323 connection to the Survivable Remote Site Telephony

(SRST) router

• T.38 fax relay and modem pass-through

• Codec support: G.711, G.729. G.729a will be used if the gateway does not support G729 annex b

• RADIUS and TACACS+ for Telnet and authorization

The following table lists the feature specifications for Cisco 450 Voice Gateway.

Table 1: Cisco SM-X Single-Wide Service Module Feature Specifications

SM-X-72FXSSM-X-24FXS/4FXOSM-X-16FXS/2FXOSM-X-8FXS/12FXOFeature

Tip and Ring

Interface for each

FXS port

Cisco 450 Voice Gateway Hardware Installation Guide

Overview of Cisco VG450 Voice Gateway

Analog Phone Connectivity

SM-X-72FXSSM-X-24FXS/4FXOSM-X-16FXS/2FXOSM-X-8FXS/12FXOFeature

FXS (RJ-21)FXS (RJ-21), FXO

(RJ-11)RJ-21 ports 0 to 23:

FXSRJ-11 ports 24 to 27:

FXO

FXS/FXO (RJ-21)RJ-21

ports 0 to 15: FXSRJ-21

ports 16 and 17: FXO

FXS/FXO (RJ-21)RJ-21

ports 0 to 7: FXSRJ-21

ports 8 to 19: FXO

Interface

In-band DTMF

Out-of-band pulse (8

to 12 pps)

In-band DTMF Out-of-band

pulse (8 to 12 pps)

In-band DTMF Out-of-band

pulse (8 to 12 pps)

In-band DTMF

Out-of-band pulse (8 to 12

pps)

Address signaling

format

FXS loop-start,

ground-start, and DID

signaling

FXS loop-start, ground-start,

and DID signaling

FXS loop-start,

ground-start, and DID

signaling

FXS loop-start,

ground-start, and DID

signaling

FXS signaling

formats

Slot, Bay, and Ports

The FXO port is used to connect to PBX or key systems, or to provide off-premises connections to the PSTN.

It supports battery reversal detection and caller ID. The FXO port is also used to connect to analog Centralized

Automatic Message Accounting (CAMA) trunks to provide dedicated E-911 service (only in North America).

The FXS port is used to connect analog phones, modems, fax machines, and speaker phones to an enterprise

IP voice system, and to use them as extensions to your Cisco or third-party IP call-control system. Having

these devices tightly integrated with the IP-based phone system is advantageous for increased manageability,

scalability, and cost-effectiveness. The Direct Inward Dialing (DID) port is used to provide off-premises DID

connection from the central office. It serves only incoming calls from the PSTN. The Caller ID feature is not

supported in DID mode.

Cisco 450 Voice Gateway supports the following:

• Slot 0/1, 0/2, 0/3:

• NIM-1MFT-T1/E1

• NIM-2MFT-T1/E1

• NIM-4MFT-T1/E1

• NIM-8MFT-T1/E1

• NIM-2FXO

• NIM-4FXO

• NIM-4EM

• NIM-2BRI-NT/TE

• NIM-4BRI-NT/TE

• NIM-2FXSP

• NIM-4FXSP

• NIM-2FXS/4FXOP

• SM Slots 1 and 2:

• SM-X-8FXS/16FXO

• SM-X-16FXS/2FXO

• SM-X-24FXS/4FXO

Cisco 450 Voice Gateway Hardware Installation Guide

Overview of Cisco VG450 Voice Gateway

Slot, Bay, and Ports

• SM-X-72FXS

• SM slot 3:

• SM-X-72FXS

• No Skye SM is supported.

• No DSP Farm is supported

• No CUBE and CME are supported

• Old D3 analog FXS and combo FXS/FXO NIMs are not supported.

• T1/E1: channel-group CLI is not supported

• CME: telephone service CLI is not supported.

The following table provides information about Cisco 450 Voice Gateway SKU:

Table 2: Cisco 450 Voice Gateway

Number of Failed-over PortsLEDMaximum Number or

RENs

Maximum Number of FXS-E

Ports

Interface

8 ports on RJ-21EN LED (Amber/Green)

ACT LED (Green)

168SM-X-8-FXS/12FXO

2 ports on RJ-21EN LED (Amber/Green)

ACT LED (Green)

1616SM-X-16-FXS/2FXO

4 ports on RJ-11EN LED (Amber/Green)

ACT LED (Green)

1616SM-X-24-FXS/4FXO

—EN LED (Amber/Green)

ACT LED (Green)

• 40

• 30

• 16 for 72FXS mode

• 56 for 56FXS-E mode

SM-X-72FXS

The slot, bay, and port information for Cisco 450 Voice Gateway FXS module is as follows:

PortBaySlotInterface

0-701-2SM-X-8-FXS/12FXO

0-1501-2SM-X-16-FXS/2FXO

0-2301-2SM-X-24-FXS/4FXO

•0-71

•0-55

01 and

SM-X-72FXS

The slot, bay, and port information for Cisco 450 Voice Gateway FXO module is as follows:

PortBaySlotInterface

8-1901-2SM-X-8-FXS/12FXO

16-1701-2SM-X-16-FXS/2FXO

Cisco 450 Voice Gateway Hardware Installation Guide

Overview of Cisco VG450 Voice Gateway

Slot, Bay, and Ports

PortBaySlotInterface

24-2701-2SM-X-24-FXS/4FXO

Cisco VG450 Voice Gateway Chassis

The following figures show the front and back panels of the Cisco VG450 Voice Gateway Chassis:

Figure 1: Front Panel of the VG450 Voice Gateway

Figure 2: Back Panel of the VG450 Voice Gateway

Technical and Compliance Specifications

The following table details the technical specifications of Cisco VG450 Voice Gateway.

Table 3: Cisco VG450 Voice Gateway Technical Specifications

SM-X-72FXSSM-X-24FXS/4FXOSM-X-16FXS/2FXOSM-X-8FXS/12FXODescription

Physical

1.58 x 15.57 x 7.57 inches1.58 x 7.44 x 7.6 inches1.58 x 7.44 x 7.6 inches1.58 x 7.44 x 7.6 inches

Dimensions (H

x W x D)

4.94 lb (2.24 kg)2.12 lb (0.96 kg)1.98 lb (0.90 kg)1.90 lb (0.86 kg)Weight

Power

128.16W79.37W70.32W53.55W

AC power

Cisco 450 Voice Gateway Hardware Installation Guide

Overview of Cisco VG450 Voice Gateway

Cisco VG450 Voice Gateway Chassis

SM-X-72FXSSM-X-24FXS/4FXOSM-X-16FXS/2FXOSM-X-8FXS/12FXODescription

10.68A on 12V6.61A on 12V5.86A on 12V4.46A on 12VCurrent

12V from backplane12V from backplane12V from backplane12V from backplaneVoltage

-44V-44V-44V-44VOn-hook voltage

25 mA (maximum) for

short loop-length-port35

mA for long

loop-length-port

25 mA (maximum) for

short loop-length-port35

mA for long

loop-length-port

25 mA (maximum) for

short loop-length-port35

mA for long

loop-length-port

25 mA (maximum) for

short loop-length-port35

mA for long

loop-length-port

Off-hook loop

current

32 o to 104 o F (0 o to 40 o

Operating

temperature

-40 o to 158 o F (-40 o to

70 o C)

-40 o to 158 o F (-40 o to

70 o C)

-40 o to 158 o F (-40 o to

70 o C)

-40 o to 158 o F (-40 o to

70 o C)

Nonoperating

temperature

Up to 600 ohms for short

loop-length-portUp to 1400

ohms for long

loop-length-port

Up to 600 ohms for short

loop-length-portUp to 1400

ohms for long

loop-length-port

Up to 600 ohms for short

loop-length-portUp to 1400

ohms for long

loop-length-port

Up to 600 ohms for short

loop-length-portUp to 1400

ohms for long

loop-length-port

FXS loop

resistance

Up to 1400 ohmsUp to 1400 ohmsUp to 1400 ohmsUp to 1400 ohmsDID loop

resistance

20, 25, 30, and 50 Hz20, 25, 30, and 50 Hz20, 25, 30, and 50 Hz20, 25, 30, and 50 HzRing frequency

5 RENs per port

(short-loop-length port)2

RENs per port

(long-loop-length port)

5 RENs per port

(short-loop-length port)2

RENs per port

(long-loop-length port)

5 RENs per port

(short-loop-length port)2

RENs per port

(long-loop-length port)

5 RENs per port

(short-loop-length port)2

RENs per port

(long-loop-length port)

REN loading

600c, 600r, 900c, 900r,

complex1, complex2,

complex3, complex4,

complex5, and complex6

600c, 600r, 900c, 900r,

complex1, complex2,

complex3, complex4,

complex5, and complex6

600c, 600r, 900c, 900r,

complex1, complex2,

complex3, complex4,

complex5, and complex6

600c, 600r, 900c, 900r,

complex1, complex2,

complex3, complex4,

complex5, and complex6

Impedance

Short-loop-length port:

3000 ft (900 m) with 26

AWG, 5500 ft (1700 m)

with 24

AWGLong-loop-length

port: 11,000 ft (3400 m)

with 26 AWG, 18,000 ft

(5500 m) with 24 AWG

Short-loop-length port:

3000 ft (900 m) with 26

AWG, 5500 ft (1700 m)

with 24

AWGLong-loop-length

port: 11,000 ft (3400 m)

with 26 AWG, 18,000 ft

(5500 m) with 24 AWG

Short-loop-length port:

3000 ft (900 m) with 26

AWG, 5500 ft (1700 m)

with 24

AWGLong-loop-length

port: 11,000 ft (3400 m)

with 26 AWG, 18,000 ft

(5500 m) with 24 AWG

Short-loop-length port:

3000 ft (900 m) with 26

AWG, 5500 ft (1700 m)

with 24

AWGLong-loop-length

port: 11,000 ft (3400 m)

with 26 AWG, 18,000 ft

(5500 m) with 24 AWG

FXS loop length

Category 3 and Category 5Category 3 and Category 5Category 3 and Category 5Category 3 and Category 5Cables

The following table details the compliance specifications of Cisco VG450 Voice Gateway.

Cisco 450 Voice Gateway Hardware Installation Guide

Overview of Cisco VG450 Voice Gateway

Technical and Compliance Specifications

DescriptionCompliance Specification

• UL 60950-1

• CAN/CSA C22.2 No.

60950-1

• EN 60950-1

• AS/NZS 60950-1

• IEC 60950-1

Safety

• TIA/EIA/IS-968

• CS-03

• TBR21 (FXO)

• ES 201 970 (FXS)

• S002, S003

Telecom

• 47 CFR, Part 15

• CES-003 Issue 4

• EN55022 Class A/B

• CISPR22 Class A/B

• AS/NZS 3548 Class A

• VCCI V-3

• CNS 13438

• EN 300-386

EMC

• EN 55024, CISPR 24

• EN50082-1

• EN 61000-6-1

• EN300-386

Immunity

Platform and Software Requirements

Cisco 450 Voice Gateway is supported on Cisco 4461 Integrated Services Router effective with Cisco IOS

XE Fuji 16.9.1 or later. The service modules provide gateway services for Cisco Unified Communications

using Cisco Unified Communications Manager with SRST or Cisco Unified Communications Manager

Express. The following table provides information about the software version that is compatible with FXO

and FXS service modules.

Table 4: Compatible Software Versions with the FXO and FXS Service Modules

Software VersionProduct Category

Cisco IOS XE Fuji 16.9.1Cisco IOS XE Software

10.5.2(SU8), 11.5.1(SU6) and 12.5Cisco Unified Communications Manager

Any version that is compatible with Cisco IOS XE Fuji 16.7.1Cisco Unified Communications Manager Express

IP-based trunk; SIP and H.323Third-party Call Control

Cisco 450 Voice Gateway Hardware Installation Guide

Overview of Cisco VG450 Voice Gateway

Platform and Software Requirements

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