11- Installation And Mounting; Switching The Octalarm-Ip On And Off; Recommendations; Alarm Reporting By Telephone Using Internet Telephony (Voip) - Adesys Octalarm-IP Manual

11- Installation and mounting

Switching the Octalarm-IP on and off

The unit will switch on automatically after it has been connected to a power point. The unit can
be turned off by removing the plug from the power point and holding in the Reset button on the
print for a few seconds. The Reset key is located under the ethernet connections in the
Octalarm-IP's connections compartment. The connections compartment is accessed by sliding
the control panel up (see page 42).

Recommendations

Alarm reporting by telephone using internet telephony (VoIP)

General
There is an increasing shift towards internet telephony from analogue lines and ISDN lines.
Internet companies are offering a combination of internet and telephone services via ADSL or
cable. In such cases VoIP or Voice over Internet Protocol is used. Even though this can be a
perfectly adequate solution for normal telephone services, VoIP can present risks for alarm
reports.
Risk factors for alarms using VoIP
• Equipment that is dependant on the mains voltage, like an internet modem, is required
for VoIP. If there was to be a mains failure, this equipment would not function and it
won't be possible to send alarms.
• VoIP connections have a different bandwidth but this isn't noticeable with voice
connections. However, it can have an influence on the modem connections that are
sometimes necessary for alarm reports. Always check that SMS and pager messages
are correctly received.
• In practice it seems that traditional telephone connections have a high degree of
availability. In contrast, internet connections regularly fail making a connection
impossible. The same will also apply to VoIP since during those periods the alarm
won't work. It is important that a number of measures are taken when connecting an
alarm dialer to a VoIP modem.
Measures to take when using VoIP
• Connect the Octalarm-IP directly to the internet via the ethernet connection from the
ADSL modem to make line testing possible.
• Ensure that there is a monitored emergency power supply for the internet equipment
so that it will continue to function if there is a power failure. This is available from
Adesys and offers monitoring from the alarm dialer: type AU-023.
Octalarm-IP 100104E 39