How to Forward Calls from Business Line to Cell Phone

There are two broad ways to send business calls to your cell, and they behave very differently. Picking the right one matters more than memorizing any code.

All-call (unconditional) forwarding sends every incoming call straight to your cell phone. Your business desk phone does not ring at all. This is the simplest option when you are out of the office for the day, but it also means calls reach your personal phone even when you are busy or asleep.

Conditional forwarding only kicks in under certain conditions: when the business line is busy, when nobody answers after a set number of rings, or when the line is unreachable. This lets your desk phone ring first, and your cell becomes the backup. Not every provider or plan supports every condition, so confirm with your provider before relying on it.

• All-call forwarding: every call goes to your cell immediately; the desk phone never rings.
• No-answer forwarding: the business line rings first, then unanswered calls move to your cell.
• Busy forwarding: calls move to your cell only while the business line is in use.
• Unreachable forwarding: calls move when the line is down or out of service.
• Forwarding usually applies to calls only, not text messages.

The single most common mistake is using a code from the wrong product. Many providers sell several phone services with different instructions. For example, AT&T's codes for AT&T Phone for Business differ from AT&T Collaborate, and Comcast Business features depend on whether you have Voice Mobility, Business Voice, or VoiceEdge.

Check your monthly bill or your online account for the exact service name. If you cannot tell which product you have, call your provider's business support and ask two questions: does my plan support forwarding to an outside mobile number, and what are the activation and deactivation codes for my exact service? Getting this confirmed up front saves a failed test call later.

• Find the service name on your bill or account portal before using any code.
• Ask your provider whether your plan supports forwarding to an outside number at all.
• Confirm whether conditional (busy or no-answer) forwarding is included, since some plans only offer all-call forwarding.

These are the codes each provider publishes for its own service. They are not interchangeable between carriers or between products from the same carrier. Always confirm the service name first.

Verizon mobile: dial *72 plus the 10-digit destination to forward all calls; *73 disables. *71 plus the destination forwards unanswered calls. Setup must be done from the mobile phone while in Verizon coverage, and charges depend on your plan. Verizon business landline: dial *72 and follow the activation instructions from the business line; *73 deactivates from the same line.

T-Mobile: dial **21*1 followed by the 10-digit destination and # for unconditional forwarding; ##21# disables it. Use **61*1 for no-reply, **62*1 for unreachable, and **67*1 for busy, each with its matching ## code to disable. ##004# resets forwarding to defaults. AT&T Phone for Business: all calls, dial *72, destination, then #; turn off with *73#. No answer uses *92 (off with *93#) and busy uses *90 (off with *91#). AT&T Collaborate uses *72/*73 for always, *92/*93 for no-answer, and *62/*63 for busy, so the product name really matters.

Optimum Business Phone: dial *72, wait for dial tone, then dial the destination; the destination answering confirms forwarding, and *73 turns it off. Frontier Unlimited Digital Voice: lift the handset, dial *72, wait for a second dial tone, enter the destination, and listen for confirmation; *73 disables. Spectrum Business Voice and Vonage Business Communications manage forwarding through their online portals rather than star codes: in SpectrumBusiness.net, open Voice, choose the number, then Voice Settings or Forwarding Manager; in Vonage, select Call Forwarding and enable forwarding to a phone number. C Spire wireless publishes *72 plus the destination for all-call forwarding and *73 to disable; its No Answer Transfer feature is a separate add-on, so confirm eligibility for your plan.

• Never borrow a code from another carrier or another product from the same carrier.
• Some providers use portals or apps instead of star codes; both are normal.
• If your provider is not listed here, ask its business support for the exact codes rather than guessing.

After activating forwarding, verify it works before you rely on it. Call your business number from a different phone, such as a friend's cell or a second line. If you set all-call forwarding, the business phone should stay silent and your cell should ring. If you set no-answer forwarding, let the business phone ring until it would normally stop, then confirm the call arrives on your cell.

Write down the deactivation code at the same time you activate. For most providers that is *73, but portal-based services turn forwarding off in the same online settings where you turned it on. Forgetting how to disable forwarding is a common way owners accidentally send business calls to the wrong place weeks later.

One more caution: all-call forwarding usually overrides voicemail on the business line, and on some systems it overrides hunt groups that would otherwise pass calls to other lines. If you depend on either of those, conditional forwarding may fit better.

• Test from a phone other than the business line or your cell.
• Record the deactivation code or portal path the moment you activate.
• Remember that all-call forwarding can override business-line voicemail and hunt groups.

Forwarding moves the ringing to your phone, but you still handle every call yourself. When you are on a job, driving, or with a customer, a forwarded call goes to your cell's voicemail, and callers who needed an answer right away may hang up and try a competitor. Forwarding also sends calls to your personal phone at all hours unless you remember to switch it off.

That is where an answering layer helps. AllDayDesk, the service on this site, answers business calls around the clock using the business information you save. You keep your existing public number by forwarding calls to it, using the same provider instructions covered above. During setup you choose your business or enter its website, check the details it learned, hear a personalized sample, and then choose your phone setup. The sample is a preview only and creates no real booking. Once you have configured your services and availability, new appointments go on the built-in AllDayDesk dashboard calendar, and an optional Google Calendar connection is available in Settings after you connect and authorize your account. Calls, transcripts, summaries, and bookings all show up in your dashboard, and when the answer or price is unknown, the service takes a message for you. Changes to existing appointments are passed to you as requests, not confirmed changes.

If you want to compare a broader set of options before deciding, the guides below cover the trade-offs honestly.

• Forwarding alone means every call still lands on you, day and night.
• An answering service handles calls when you cannot pick up, without changing your public number.
• AllDayDesk keeps your number; you simply forward calls to it using your provider's steps.