G250 physical description

For information about the different media modules that can be housed in the G250 media

module slots, see Chapter 2: Optional components.

Table 1: Fixed ports and buttons on the G250 front panel
PortDescription

 

 

TRUNK

Four analog trunk ports (G250-Analog Media

 

Gateway, G250-DCP Media Gateway) or one

 

analog trunk port (G250-BRI Media Gateway,

 

G250-DS1 Media Gateway). These fixed trunk

 

ports support loop-start, DIOD (for Japan only)

 

trunks, and caller ID detection.

 

 

LINE

Two analog telephone ports. An analog relay

 

provides Emergency Transfer Relay (ETR) feature.

 

For the G250-Analog and G250-DCP, the relay is

 

between TRUNK port 304 and LINE port 305. For

 

the G250-BRI and G250-DS1, the relay is between

 

TRUNK port 301 and LINE port 302. Also used for

 

incoming analog DID trunks with either wink-start

 

or immediate-start.

ISDN BRI TRUNK

Two 4 wire S/T ISDN BRI (Basic Rate Interface)

(G250-BRI Media

2B+D access ports with RJ-45 jacks. Each port

Gateway)

interfaces to the central office at the ISDN T

 

reference point. The ISDN BRI trunk ports do not

 

support:

 

BRI stations

 

Combining both B channels together to form

 

 

a 128-kbps channel

 

 

CONSOLE

Console RS-232 interface port for direct

 

connection of CLI console. RJ-45 connector.

USB

USB port. Supports the connection of

 

USB flash drive

 

USB externally powered hub

 

The Multitech MultiModemUSB

 

 

MT5634ZBA-USB-V92 USB modem

 

 

CCA

RJ-45 port for ACS (308) contact closure adjunct

 

box.

 

ETH WAN

RJ-45 10/100 Base TX Ethernet port for

 

connection to a cable or DSL broadband modem/

 

router.

 

 

 

 

 

 

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