MultiCom SIM installation guide

Which SIM does the BFT MultiCom take?

A standard size SIM (2FF), voice-capable, active and with the PIN lock removed. The MultiCom is a multi-resident panel, but it still works like every GSM intercom underneath: one SIM, calls out to residents' phones.

Which network?

The MultiCom is 2G-era hardware, so it needs a network still broadcasting 2G at the building. That list is shrinking and varies by postcode. A multi-network SIM registers on whichever compatible network is strongest and re-registers if that network changes — on a panel serving a whole block, that resilience is worth having.

Spend cap on before it goes live: a multi-resident panel makes a lot of calls.

Fitting the SIM

For the installing engineer, power down:

1. Open the panel; the SIM holder is on the main board.
2. Seat the standard SIM — one orientation — and lock the holder.
3. Antenna connected before power, mounted high and clear of the panel's own metalwork.

First power-up

Let the module register, then program resident numbers per the manual. Test at least two flats end to end: call button, phone rings, keypress releases the door.

If it won't connect

• No registration: confirm 2G coverage at the building — test the SIM in an old phone at the panel.
• Some flats unreachable: number programming, not the network. Check formats.
• Registers then drops: marginal signal — antenna height or high-gain.

FAQ

How long will a 2G MultiCom stay serviceable? Until 2G is switched off in your area. Existing installs keep going; plan upgrades to BFT's 4G generation.

Whose SIM should go in? Any voice-capable SIM with 2G coverage at the site. Multi-network takes the guesswork out.

Does one SIM serve all residents? Yes — the panel makes all calls through the single SIM.