Cisco 450 Manuale di installazione dell'hardware - Pagina 4

Sfoglia online o scarica il pdf Manuale di installazione dell'hardware per Porta d'ingresso Cisco 450. Cisco 450 37. Voice gateway

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