Cisco VG204XM 数据表

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The Cisco VG350, VG224, VG204XM, and VG202XM are part Cisco IOS

software-based VG series stand-alone

analog voice gateways. The Cisco VG350 is a high-density 160-port gateway, the Cisco VG224 is a 24-port

gateway, and the Cisco VG204XM and VG202XM are low-density 4- and 2-port gateways, respectively. These

gateways connect analog phones, fax machines, modems, and speakerphones to an enterprise voice system

based on Cisco Unified Communications Manager (Unified CM). Having these devices tightly integrated with the

IP-based phone system is advantageous for increased manageability, scalability, and cost-effectiveness (refer to

Figure 5 later in this document). Commercial businesses can also use these gateways with Cisco Unified

Communications Manager Express to effectively augment an integrated-services-router (ISR) environment. Both

topology environments support business needs ranging from high to low concentrations of analog voice ports for

modem calls, fax calls, and analog supplementary services.

The Cisco VG350, VG224, VG204XM, and VG202XM offer Cisco IOS Software manageability on analog phone

lines so that you can use them as extensions to your Cisco or 3

party IP call control solution. The Cisco VG350

and VG224 offer 19-inch rack-mount chassis, and the Cisco VG204XM and VG202XM offer desktop form-factor

chasses with a fanless design.

Features and Benefits

●

Cisco IOS Software-based hardware: The hardware includes uniform Cisco command-line interface (CLI)

and Simple Network Management Protocol Version 3 (SNMPv3) support for ease of gateway configuration

and operation.

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Robust voice quality: Cisco experience in providing toll-quality packet-voice service helps ensure that the

Cisco VG350, VG224, VG204XM, and VG202XM provide the clear, robust voice quality end users have

come to expect from telephony services.

●

Investment protection: You can continue to use your existing analog phones, fax machines, and modems

while taking advantage of IP telephony. Basic analog phone connectivity is needed when the infrastructure

(wiring) or application does not support or require IP phones. The Cisco VG350 and VG224 offer ideal

platforms to support centralized analog phone-line deployments, and the Cisco VG204XM and VG202XM

are ideal platforms to support sparsely concentrated, distributed analog phone deployments. Thus you can

deploy IP telephony without having to purchase IP phones for all users and you can continue using existing

devices. You can also use the Cisco VG350 and VG224 in a Cisco Unified Communications Manager

Express environment and migrate to a Cisco Unified Communications Manager deployment with

100-percent investment protection.

●

High availability: With these gateways you will experience less voice downtime due to WAN link failure.

The Cisco VG350, VG224, VG204XM, and VG202XM have built-in Media Gateway Control Protocol

(MGCP) failover to an H.323 connection to a Survivable Remote Site Telephony (SRST) router. This

failover maintains voice service for analog endpoints if the WAN link fails or you lose connectivity to the

Cisco Unified Communications Manager, Cisco Business Edition or Cisco Hosted Collabortion Solution.

The Cisco VG350 is built on the Cisco Integrated Services Routers Generation 2 (ISR G2) platform

by installing an optional integrated redundant power supply (RPS), which helps decrease network

downtime and protects the network from power-supply failures. The Cisco VG224 offers high availability

during power failure using an external 12-VDC UPS for battery backup.

●

Reduced barrier to entry: These analog phone gateways provide a low-cost alternative for low-end analog

phones and allow you to take advantage of IP telephony with a lower overall IP telephony investment.