How to Divert Office Phone to Mobile

The single biggest mistake people make when diverting an office phone to a mobile is using instructions for the wrong product. A star code that works on one carrier's traditional landline may do nothing, or behave differently, on that same carrier's hosted VoIP platform. Check your bill or provider portal for the exact service name before you dial anything.

Ask yourself three questions: Is this a traditional copper or digital landline, a hosted VoIP system with a web dashboard, or a mobile line you want to forward from? The answer decides which set of steps below applies to you.

• Traditional landline: usually controlled with star codes dialed from the desk phone
• Hosted VoIP (for example Comcast VoiceEdge, Vonage Business Communications, Windstream OfficeSuite UC): usually controlled in a portal or app
• Mobile line: forwarding is activated from the mobile phone itself using carrier codes
• When in doubt, call your provider and ask for the call forwarding instructions for your exact product name

If your office line is a traditional business landline, the common pattern is: lift the handset, dial *72, wait for a second dial tone or prompt, enter the 10-digit mobile number, and listen for confirmation. The destination answering, or a confirmation tone, tells you forwarding is active. Dial *73 from the same line to turn it off.

Verified examples: Verizon business landline uses *72 to activate and *73 to deactivate. Optimum Business Phone uses *72, then the destination, with *73 to turn it off. AT&T Phone for Business uses *72, destination, # for all calls, *92 for no-answer forwarding, and *90 for busy forwarding, each turned off with the matching code plus #. Frontier Unlimited Digital Voice uses *72 with a confirmation tone and *73 to disable.

If *72 gives you an error message, your line may not have forwarding enabled, or your provider may use a portal instead. Contact the provider rather than guessing at codes.

• Lift the handset and dial *72
• Wait for the second dial tone or prompt
• Dial the 10-digit mobile number
• Listen for confirmation tones or wait for the destination to answer
• Place a test call to the office number to confirm it rings on the mobile
• Dial *73 from the same line to deactivate

Hosted VoIP platforms usually manage forwarding in a web dashboard or mobile app rather than with star codes. Sign in with an account that has permission to change phone settings, find the call forwarding section, choose the type of forwarding you want, and enter your mobile number as the destination.

For example, Spectrum Business Voice forwarding is managed in SpectrumBusiness.net under Voice Settings or Forwarding Manager, where you pick all calls or busy/no-answer forwarding and set the destination. Vonage Business Communications lets you select Call Forwarding and enable forwarding to a phone number. Windstream OfficeSuite UC uses the My Call Forwarding widget in the WE Connect dashboard. Comcast Business manages features through My Account or the Comcast Business App, and the exact options depend on whether you have Voice Mobility, Business Voice, or VoiceEdge.

After saving, verify the destination with an outside call to the office number, because screens differ between devices and versions.

• Sign in to the provider portal with an admin or authorized account
• Open the voice or phone settings for your specific number
• Choose all-call forwarding, or busy/no-answer forwarding if offered
• Enter your mobile number as the destination and save
• Test with a real call from another phone

Sometimes the direction is reversed: you want a mobile line to send calls elsewhere. Mobile forwarding is activated from the mobile phone itself, usually while in carrier coverage. On Verizon mobile, *72 plus the 10-digit destination forwards all calls, *71 handles unanswered calls, and *73 disables forwarding; texts are not forwarded. On T-Mobile, **21*1 followed by the destination and # forwards all calls, **61*1 covers no-reply, **62*1 covers unreachable, **67*1 covers busy, and ##004# resets forwarding to defaults.

Forwarding availability and charges depend on your plan and device, and some prepaid or reseller lines do not support every option. Check with your carrier if a code is rejected.

• Verizon mobile: *72 + destination for all calls, *71 + destination for unanswered, *73 to disable
• T-Mobile: **21*1DESTINATION# all calls, **61*1 no reply, **62*1 unreachable, **67*1 busy, ##004# reset
• Forwarding applies to calls, not text messages
• Activation must be done from the mobile phone while in coverage

All-call (unconditional) forwarding sends every incoming call straight to your mobile, and the desk phone does not ring. This is the simplest choice when the office is closed or you are out all day, but it also means calls never reach the desk phone or its voicemail while it is on.

Conditional forwarding sends calls to the mobile only in specific situations: when the line is busy, or when nobody answers after a set number of rings. This keeps the desk phone working normally during office hours and catches the calls that would otherwise be missed. Not every product offers every condition, so check which options your service supports before planning around them.

• All-call: every call diverts immediately; desk phone stays silent
• No-answer: desk phone rings first, then diverts if unanswered
• Busy: diverts only while the line is already on a call
• Reminder: all-call forwarding usually overrides the desk phone's voicemail

Once forwarding is active, call your office number from a different phone and confirm it rings on the mobile and shows your business number where possible. Note the deactivation code or portal path so you can switch back quickly.

Diverting to your mobile means you personally handle every call that comes in, including ones that arrive while you are driving, on another call, or with a customer. If that becomes a problem, an answering service is an alternative destination: instead of your mobile, calls go to a service that answers in your business's name, takes messages, and can book appointments. AllDayDesk, this site's own product, answers calls around the clock using your saved business information, keeps your public number through call forwarding, and shows calls, transcripts, summaries, and bookings in a dashboard. Setup involves choosing your business or entering its website, checking the details, hearing a personalized sample, and then choosing your phone setup. When the answer, price, or appointment is unknown, it takes a message for you.

• Test with a real call from another number after activating
• Write down the deactivation code (*73 on most landlines) before you need it
• Remember diverted calls reach you personally, at any hour the forwarding is on
• Consider an answering service if you cannot always pick up