Your number is painted on the van, printed on 400 business cards, and stuck to a Google listing you've been feeding reviews into since 2019. Changing it would be madness. You never have to. Forwarding a business line is a twenty minute job done mostly by typing short codes into a keypad, and undoing it takes six characters.

411 Locals studied 85 small businesses and found 62 percent of calls to them went unanswered. The Numa Small Business Phone Report says 85 percent of callers who reach voicemail never ring back. Nobody leaves a message and waits. They dial the next name.

Porting the number to a new carrier is the other route, and it's the one to skip unless your current carrier is shutting the line down. Ports take days. They stall. While one is in flight your line can do odd things, like ringing through to nowhere for an afternoon while two carriers disagree about who owns it. Forwarding touches none of that. The number stays exactly where it is, billed by whoever bills it now.

Find out who actually owns the line

Before you touch a keypad, get into the account that controls the number. Sounds trivial. It kills more of these projects than anything technical does. Maybe it's a landline running into the shop on copper, billed by a regional telco whose support desk is a phone number and a hold queue. Or a mobile line on a business account your brother-in-law opened in 2016, a year before he moved to Arizona. Worst case, a VoIP number in a portal where the admin email belongs to a bookkeeper who quit in March. Sort that out first, because every step below needs that login.

Four switches, and you probably want three

Mobile numbers on GSM networks, which in the US means most of them, take feature codes you dial like a phone number. Type it, hit call, wait for the confirmation screen. Then test it anyway, because that screen only proves the network accepted the code.

  • Forward everything, immediately: **21*15551234567#
  • Forward when you don't pick up: **61*15551234567#
  • Forward when the line is busy: **67*15551234567#
  • Forward when the phone is off or has no signal: **62*15551234567#

Each one cancels with the same digits behind a double hash: ##21#, ##61#, and so on. ##002# wipes every forwarding rule on the line at once. That's the one you want at 4pm on a Friday, when a test goes sideways and you've no idea which rule caused it.

Landlines are older and simpler. On a lot of US carriers *72 turns forward-all on and *73 turns it off, with *71 covering busy and no-answer. Verizon, AT&T and T-Mobile each vary the details, so read your own carrier's support page rather than a forum thread from 2014. Some of these codes date to the 1980s and have outlived most of the companies that invented them, which is either charming or a scandal depending on your mood. Anyway.

Most owners want 61, 67 and 62 switched on and 21 left alone. Your phone still rings. Grab it and nothing has changed. Ignore it, and the call lands wherever you pointed it instead of in a voicemail box nobody checks.

Voicemail will eat the call if you let it

This is the part that trips up nearly everyone, and it's a race. Conditional forwarding fires after a set number of seconds. Carrier voicemail fires after a set number of seconds too. Shorter timer wins, and voicemail's default is usually short enough to take the call before your forward gets a look in.

Two fixes, pick one. Shorten the forward timer: on many GSM carriers *61*15551234567*11*15# sets the no-answer forward to fifteen seconds, and the value has to land on a multiple of five, thirty at the top. Or switch carrier voicemail off entirely. If something is answering at 2am, voicemail has no job left to do.

Now try to break it

Test from a phone that isn't on your account. Borrow one. Testing with your own second line is how people end up confidently running a setup that's broken for everybody else. Ring the number and let it go unanswered. Ring it while you're already on a call, which takes a third handset or a patient friend. Turn the phone off and ring it again. Then ring from a withheld number, because some setups treat blocked caller ID differently, and you'd rather learn that now than from a regular who thinks you hung up on her.

The callback nobody warns you about

Forwarding only fixes one direction. The moment whatever answers for you rings a customer back or sends a text, they see the number it dialed from, and an unfamiliar area code on a screen goes straight to ignored. Set your business number as the verified outbound caller ID before you go live. It's a settings page and a verification call, ten minutes at most. Skip it and every callback you make quietly goes nowhere.

One hop, not two

Tempting setup: forward the shop line to your mobile, then forward the mobile onward to whatever's answering. Two hops. Some carriers refuse the second leg outright, and the ones that allow it can add a couple of seconds of dead air to the front of every call. Callers hear dead air and assume the line is broken, so they hang up. Forward once, straight to the thing that answers.

While you're in the account, check what forwarding costs. Some landline plans bill forwarded calls per minute as though you placed them yourself, and if the destination sits in another state that rate isn't zero. Ask the carrier in February. Not in the middle of a heat wave when the phone hasn't stopped ringing since Tuesday.

What picks up is the whole question

Everything above is plumbing. It moves the call, and it doesn't care in the slightest what happens when the call arrives. The 4:50pm caller with a leaking water heater cares enormously. She books you, or she dials the next plumber in the search results, and that gets settled in about ten seconds by whatever says hello.

Rocketship answers on your own number, day and night. It knows your hours, your services and your prices, answers what the caller actually asked instead of reading out a menu, books straight into your Google Calendar, takes a name and a number, and hands the call to a human the second somebody asks for one. Free tier to start, paid plans from 12 dollars a month. The 4:50pm call gets handled like the 10am one.