Filter
Top Products
G250 physical description
Issue 5 June 2008 17
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
Port Description
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
(G250-BRI Media
Gateway)
Two 4 wire S/T ISDN BRI (Basic Rate Interface)
2B+D access ports with RJ-45 jacks. Each port
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.
1 of 2