Cisco 450 Instrukcja instalacji sprzętu - Strona 4

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Features and Benefits of Cisco VG450 Voice Gateway

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)

Note

Switching between the modes requires reload of the ISR chassis.

• 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