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Motorola FW500 backup phone

99scouser — Fri, 28 Nov 2025 16:01:35 GMT

When my elderly parents converted to Digital phone over existing DSL broadband BT installed a Motorola FW 500 backup phone and told them to use this phone in an a emergency only.

I have read this phone can be used when the power is on and you should get 2 dials tones, one when the power is on ( phone over BB) and different dial tone if the power is off indicating the calls are now going over the SIM.

Currently I don't get dial tone when the power is on. Anyone have one of these?

Thx

Scouser

Re: Motorola FW500 backup phone

99scouser — Fri, 28 Nov 2025 18:51:16 GMT

Update, when I say "power is off or on" its probably more correct to say BB is on or off.

Re: Motorola FW500 backup phone

Ali_A — Sat, 29 Nov 2025 10:58:26 GMT

Hi @99scouser

Do you have a SIM card inserted in the telephone?

You can visit EMERGENCY BACK-UP LINE TELELPHONE MODEL: FW500 Manual on how to check this.

Ali

Re: Motorola FW500 backup phone

99scouser — Sat, 29 Nov 2025 11:28:29 GMT

Yes, BT installed the phone and sim last week when they cut over to digital phone service.

Re: Motorola FW500 backup phone

Ali_A — Sun, 30 Nov 2025 14:00:45 GMT

@99scouser

Although there is no dial tone, are you able to make an outgoing call or does it ring with incoming calls?

Ali

Re: Motorola FW500 backup phone

99scouser — Sun, 30 Nov 2025 14:42:25 GMT

Hi ALi, no, no incoming calls and no dial tone. The screen is lit up though.

Re: Motorola FW500 backup phone

Ali_A — Sun, 30 Nov 2025 15:46:20 GMT

@99scouser

Although you have no dial tone, are you able to make a call?

Please check all cables are correctly connected between the phone and router.

Ali