ENUK - V1.4 - 25/01/17
5
4000 Series GSM Audio Intercom - Technical Manual
4000 Series GSM Audio Intercom with Proximity
Standard SIM
Micro-SIM
Nano-SIM
;
25mm
15mm
:
15mm
12mm
:
12.3mm
8.8mm
NETWORK PROVIDER SELECTION
It is imperative that for the reliable operation of the system that the best network provider for the area is selected. Problems such
as network disconnection can occur if the provider has signal or interference problems for that area. We would recommend using
a GSM signal strength meter to survey the intended antenna location. Contact Videx for more information on where to purchase a
tester.
As an initial check we also recommend visiting the ofcom website
www.ofcom.org.uk
and follow the onsite links to their online
mobile coverage tool. This tool will advise on the best coverage for the main network providers and other general queries that you
may have about the service provider.
The antenna should always be mounted vertically at the highest point possible. Metal structures and sources of interference such
as power cables, control panels etc. can affect signals and so the antenna should be mounted away from these.
When registering a new SIM you may be asked for the IMEI number. This is the unique serial number of the GSM intercom. This num-
ber is located internally on the main hardware chip inside the GSM PRO module. To gain access to the GSM module and obtain this
number the module will have to be opened. It is recommended that you contact Videx Technical on tel: 0191 224 3174 for advise on
how to do this. The IMEI number is printed on the Telit chip label below the chip model number, as shown in
Fig.1
.
Fig. 1
PRECAUTIONARY ADVICE
• When mounting the GSM antenna, choose a location which is away from human interaction and away from the intercom panel.
Route the GSM antenna cable from the intercom panel so that it is separate from the power supply cables and microphone wire.
• Always ensure the power is switched OFF to the intercom panel before inserting or removing the SIM card.
• New SIM cards will need registering with the network service provider before they can be used. Full details of how this is done
can normally be found in the SIM card pack. It will normally require that the SIM card is inserted into a mobile phone, a number
dialled and instructions followed. While the SIM is in the mobile phone it would be a good time to disable any PIN codes, call
diverts, ring back and disable features such as voicemail and text alerts. Details of how to do this can be found on the SIM card
provider’s web site or by calling their customer services. Recommended SIM card providers are: Vodafone, T-Mobile, O2 or
Orange/EE.
We do not recommend using the 3 network at this present time.
Introduction
