You pressed 9 and the door did not open
A door digit that does nothing usually means your building does not use 9. The digit that releases the door is set by the building and varies, so the number everybody quotes is a convention rather than a standard. The other causes are pressing it too early, a call path that mangles the tone, and a door release fault the building has to fix.
The buzzer rang, you answered, you pressed 9, and your friend is still outside. This is the last step in the chain and the one most likely to fail silently.
One: it is probably not 9
Nine is a convention that became folklore. The digit that releases the door is configured in your building panel and buildings pick different ones.
Email property management and ask which digit releases the lobby door for your building. It is one line and it settles most of these. What else to ask in the same email.
Two: timing
Answer first, hear the visitor, then press. A digit pressed while the call is still connecting goes nowhere, because the panel is not listening for it yet.
Hold it for a beat rather than tapping. A very short tone is easier for a panel to miss than a long one.
Three: the call path is eating the tone
The digit travels down the call as an audible tone, and every hop the call takes is a chance for that tone to be degraded or dropped.
| How the buzz reaches you | Door digit reliability |
|---|---|
| Panel dials your mobile directly | Good |
| Panel dials a service built for buzzers | Good, it is the whole job |
| Carrier call forwarding | Usually fine, sometimes not |
| A general VoIP or virtual number | Frequently poor |
| Google Voice | Commonly fails here |
This is the specific step where the cheap routes fall down, and it is the only step a visitor actually cares about. Why Google Voice struggles at the door.
Four: the release itself is broken
If you have the right digit, the timing is right and the call is direct, and the door still does not open for anybody in the building, then the release hardware or its wiring has failed.
That is a building repair. Report it as a door not releasing rather than as a buzzer problem, because those go to different people. Working through the rest of the chain.
BuzzMeBro treats the door digit as the job rather than a side effect, and shows you the digit your own building uses instead of assuming 9. Get your number.
Questions people ask
Is the door digit always 9 in Canada?
No. It is common enough that everybody quotes it, and plenty of buildings use something else. The building sets it, so the building is the only reliable source.
Can I press it before answering?
No. The tone has to travel down a connected call. Answer, let the visitor hear you, then press and hold the digit for a moment.
It works sometimes. Why would it be intermittent?
Intermittent almost always means the audio path rather than the digit. A route that adds hops between the panel and your phone will degrade the tone unpredictably.
My neighbour has the same problem. Whose fault is it?
If several units cannot open the door with the correct digit, it is the building. Report it together, because a shared report gets treated as a building fault rather than a resident question.
How do I find out my building digit if nobody answers my email?
Ask a long-standing neighbour, since it is the same for the whole building. With BuzzMeBro the digit for your building is shown in the app, so nobody has to remember it.