Cisco WS-X4604-GWY - VoIP Gateway Especificaciones descargar pdf (Pagina 21)

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Cisco Catalyst 4000 Access Gateway Module Installation and Configuration Note

OL-3008-01

Chapter 1 Overview

Hardware Features

Cisco Catalyst 4000 DSP Set

The Cisco Catalyst 4000 DSP set for the AGM includes 4 SIMMs with 6 DSPs each for telephony

services. The DSPs are required for analog or digital voice gateway support as well as for advanced voice

services such as conferencing or transcoding.

For information on the voice services enabled by the DSPs, see Voice Gateway Features and Advanced

Voice Services in the Software Features section.

Cisco Catalyst 4000 8-Port and 16-Port RJ-21 FXS Modules

The Cisco Catalyst 4000 8-port and 16-port RJ-21 FXS modules can be installed in the high density

analog flexslot on the AGM. By providing services to fax machines, speakerphones, modems, and

analog phones, the FXS ports emulate a PSTN central-office (CO) or PBX.

Calls from analog phones and fax machines connected to the FXS ports can be connected to the PSTN

or another analog phone via TDM switching on the AGM module itself, or converted to VoIP for

connection to an IP phone or for transmission across the IP WAN.

Note The FXS interfaces are separated into power domains to provide power protection between

domains and to ensure that ports not directly affected continue to operate.

Cisco Catalyst 4000 Encryption Service Adapter

The Encryption Service Adapter (ESA) for the AGM supports an integrated package of routing, firewall,

intrusion detection, and virtual private network (VPN) functions. The ESA provides up to ten times the

performance of software-only encryption by offloading the encryption processing from the router central

processing unit (CPU). The ESA can be used to connect branch offices to the enterprise IP WAN, mobile

users, partner extranets, or service provider managed customer premises equipment (CPE). Other ESA

hardware features include:

• 3 DES encryption/decryption on two duplex E1 links with 64-byte packets. This translates to a data

rate of 8 mbps and 15 kbps, respectively

• Simultaneously support 10 tunnels and 60 security associations

• 4 Internet Key Exchange (IKE) SA setups per second

Data Interface Modules

Data interfaces can be installed in the two VIC/WIC slots on the AGM. Table 1-1 describes the data

interface modules supported by the AGM.

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