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13
Modem/ISDN port
The.AdderView.CATx.IP.models.
provide.a.serial.port.to.allow.you.
to.connect.either.a.modem.or.ISDN.
terminal.adapter..This.can.be.used.
as.a.primary,.secondary.or.backup.
access.port.for.global.users,.as.best.
suits.your.overall.configuration.
IMPORTANT: When the AdderView
CATx IP is accessible from the public
Internet or dial up connection, you
must ensure that sufficient security
measures are employed.
Note: On non-IP models, the
COM2/MODEM port is reserved for
the support of future features.
To connect a modem or ISDN adapter
1. If.possible,.disconnect.power.from.the.AdderView.CATx.IP.and.the.modem.
or.ISDN.adapter.
2. Connect.a.suitable.serial.modem.(non-crossover).cable.to.the.serial.port.on.
the.modem/ISDN.adapter.
3. Connect.the.other.end.of.the.serial.cable.to.the.port.labelled.COM2.at.the.
rear.of.the.AdderView.CATx.IP.
Note: The default serial port speed is 115200 and a standard Hayes-compatible
auto-answer string is sent during startup. The default startup string is ‘ATZS0=1’.
Both the serial port speed and startup string settings can easily be altered during
configuration - see Initial IP configuration for more details. The other serial
settings are fixed at: No parity, 8 bit word and 1 stop bit.
Cable from modem
or ISDN adapter
AdderView CATx
rear panel