2. Install the 1203 by connecting a single pair twisted 24 AWG wire to its terminal block
and wire it to the Relay Inp t on the Algo SIP Endpoint’s terminal block. The
connection is polarity independent. If the endpoint is config red for the 1203 Call
Switch the bl e LED sho ld ill minate immediately pon connection. The 1203 may
be p to 1000 feet (300m) from the Algo SIP Endpoint when connected with a single
pair 24 AWG wire. In practice, this will often be one pair from a 4 pair CAT5/CAT6
cable however any existing telephone twisted wire pair is s itable.
ESD Notice:
Electrostatic discharge to the 1203 Call Switch or faceplate will be
conducted into the host IP endpoint if the electrical bo is not grounded.
If grounding the electrical bo is not feasible or the electrical bo is not
conductive then either input terminal (Relay Input/SW) to the host IP
endpoint may be connected to Earth ground. This connection may be
made with a 24 AWG wire since it serves to bleed away static charge
rather than conducting the ESD discharge to ground.
In certain cases there is no requirement for additional grounding. ESD
protection and static discharge is built in to the following products if
connected to a ground referenced network switch with static charge
dissipation. Earlier manufactured products require ground protection at
the 1203 switch or relay input.
8301 Rls 13 or later manufactured after May 201
8180G2 Rls 01 or later manufactured after Oct 2018
8186 Rls 14 or later manufactured after Jul 201
8188 Rls 14 or later manufactured after Oct 201
81 0 Rls 01 or later manufactured after Feb 201
ESD testing with a Cisco Catalyst 2960S-24PS-L at +/- 20kV yielded good
results without grounding. Network switches with e ternal power
supplies (even if chassis grounded) should not be used with the 1203
Call Switch unless the switch plate or IP endpoint is also grounded.
Doc ment 90-00092C
2019-09-19
Algo Comm nication Prod cts Ltd
4500 Beedie St B rnaby BC Canada V5J 5L2
www.algosol tions.com
(604) 454-3792
s pport@algosol tions.com
