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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)

● Domain Name System (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 SRST router

● Cisco Fax Relay, T.38 fax relay, and modem pass-through

● Coder/decoder (codec) support, G.711, and G.729a

● RADIUS and TACACS+ for Telnet and authorization

Technical Specifications

Table 2 lists technical specifications of the gateways.

Table 2.

Technical Specifications

Category

Cisco VG350

Cisco VG224

Cisco VG204XM and VG202XM

System

Processor

High-performance multicore

processors

RISC processor

Power QUICC (power PC-based)

processor

Memory (default)

1-GB synchronous dynamic RAM

(SDRAM)

256-MB SDRAM

256-MB double data rate 2

(DDR2) RAM

Compact Flash

256 MB

128 MB, one slot Type II

128-MB NAND Flash

Ethernet

Up to three 10/100/1000 Ethernet

WAN ports are supported

Two of the 10/100/1000 Ethernet

WAN ports can support Small Form-

Factor Pluggable (SFP)-based

connectivity instead of RJ-45 ports,

enabling fiber connectivity

Two 10/100BASE-T Ethernet ports

Two 10/100BASE-T Ethernet

ports

Console and auxiliary

(maximum)

A new, innovative, mini-B USB

console port supports management

connectivity when traditional serial

ports are not available

Traditional console and auxiliary

ports are also available

Up to 119.2 kbps per port

Up to 115.2 kbps per port