Virtual Call Forwarding Service: A Plain-English Guide for Business Owners

Call forwarding is a phone feature that redirects an incoming call to a different number. A virtual call forwarding service builds on that idea: instead of just ringing a second phone, the call can be handled by a service that answers, takes messages, or books appointments on your behalf. The caller dials your normal business number and never needs to know the call went anywhere.

There are two pieces to understand. The first is the forwarding itself, which is usually controlled by your phone carrier with a short code or an online setting. The second is the destination — where the calls land. That destination can be your own phone, a coworker, or a virtual answering service. The forwarding feature and the answering service are separate things, and you can change either one without changing your public number.

• Your business number stays the same; only the destination changes.
• Forwarding is set up with your carrier or phone system, not with the answering service.
• The destination can be a cell phone, a landline, or a service that answers for you.
• You can usually turn forwarding on and off yourself at any time.

Not all forwarding works the same way, and picking the right type matters more than picking a provider. The two broad categories are unconditional forwarding and conditional forwarding.

Unconditional (all-call) forwarding sends every incoming call straight to the destination. Your original phone does not ring at all. This is what you want when you want a service to handle everything, or when you are closed for the day.

Conditional forwarding only redirects calls in specific situations: when you do not answer after a set number of rings, when your line is busy, or when your phone is unreachable or turned off. This lets you answer your own calls when you can and let the service catch the rest. Many owners use conditional forwarding as the everyday setup and switch to all-call forwarding after hours or on vacation.

Some phone systems also offer rings-to-multiple-phones or find-me style features that try several numbers in order. Those are separate features and may not be included with every plan, so check what your own service supports.

• All-call forwarding: every call goes to the destination; your line does not ring.
• No-answer forwarding: your line rings first, then unanswered calls move on.
• Busy forwarding: calls redirect when you are already on the phone.
• Unreachable forwarding: calls redirect when your phone is off or out of service.

The exact steps depend on your carrier and the specific product you have — a wireless line, a business landline, and a hosted voice system can all use different codes or portals. Always confirm which product you have before entering codes. On Verizon mobile, dial *72 plus the 10-digit destination to forward all calls, *71 plus the destination for unanswered calls, and *73 to turn forwarding off; setup must be done from the phone while in Verizon coverage, and it applies to calls, not texts. Verizon business landline service uses *72 to activate and *73 to deactivate.

T-Mobile uses dial codes in a different format: **21*1 followed by the destination and # enables unconditional forwarding, **61*1 for no reply, **62*1 for unreachable, and **67*1 for busy. Add ## before each code (for example ##21#) to disable it, and ##004# resets forwarding to defaults. AT&T Phone for Business uses *72 plus the destination and # for all calls, *92 for no answer, and *90 for busy, with *73#, *93#, and *91# to turn each off. These codes are specific to that product and differ from AT&T wireless and AT&T Collaborate, which have their own code sets.

Cable and fiber providers often use portals instead of codes. Spectrum Business Voice manages forwarding by signing in to SpectrumBusiness.net, opening Voice, choosing the number, and using Voice Settings or Forwarding Manager. Comcast Business manages features through My Account or the Comcast Business App depending on whether you have Voice Mobility, Business Voice, or VoiceEdge. Optimum Business Phone uses *72 with a confirmation step, and Vonage Business Communications has a Call Forwarding setting that forwards calls to a phone number.

Whatever carrier you use, verify the destination with a real outside call after you activate. If your carrier is not listed here, check its own support pages — codes from one carrier do not work on another, and some plans or prepaid lines do not support forwarding at all.

• Verizon mobile: *72 + destination (all calls), *71 + destination (unanswered), *73 to disable.
• T-Mobile: **21*1dest# (all), **61*1dest# (no reply), **62*1dest# (unreachable), **67*1dest# (busy); ##004# resets.
• AT&T Phone for Business: *72dest# (all), *92dest# (no answer), *90dest# (busy).
• Spectrum Business Voice: manage forwarding in the online portal under Voice Settings or Forwarding Manager.
• Optimum Business Phone: *72, wait for dial tone, dial destination; *73 turns it off.
• Vonage Business Communications: enable Call Forwarding and choose a destination number in the settings.

Forwarding by itself only moves the call — someone or something still has to pick it up. That is where a virtual answering service comes in. You forward your number to the service, and it answers using information you have saved about your business: your services, hours, pricing you want shared, and how you handle appointments.

With AllDayDesk, for example, you keep your public number and forward calls to us. Setup starts by choosing your business or entering its website, checking the details we found, and hearing a personalized sample of how your calls would be answered. The sample is a preview only — it does not create a real booking. Then you choose how to connect your phone, following the forwarding instructions for your carrier. Calls, transcripts, summaries, and any bookings show up in your dashboard afterward.

By default, new appointments go on the built-in AllDayDesk calendar once you have configured your services and availability. If you prefer, you can optionally connect Google Calendar in Settings after connecting and authorizing your Google account. Changes to existing appointments are passed to you as requests — the service does not confirm them on its own. When a caller asks something the saved information cannot answer, such as an unknown price or an open slot, the service takes a message instead of guessing.

You can also configure call transfers to another number with your own rules. Transfers are not guaranteed to connect or to be picked up immediately, so set them up only where that fits how you work.

• Forwarding moves the call; the answering service handles what happens next.
• You keep your existing public number — callers see no difference.
• Calls, transcripts, summaries, and bookings appear in your dashboard.
• Unknown answers become messages for you, not guesses.
• Appointment changes to existing bookings are requests for you to approve.

The right destination depends on how you work and what happens to a missed call in your trade. First, what should happen when you genuinely cannot answer? If a missed call just goes to voicemail and callers rarely leave messages, forwarding to something that answers and takes a clear message may solve that. If you mostly need calls while you are on another line or on a ladder, conditional no-answer and busy forwarding to a service may be enough.

Second, do you want calls answered around the clock or only at certain times? All-call forwarding sends everything, all the time. Conditional forwarding lets your line ring first. Some owners switch between the two manually — all-call at night, conditional during the day.

Third, do you need booking, or just messages? If callers mostly ask for appointments, a service that can book on a calendar you control saves callbacks. If they mostly ask quick questions, message taking may be enough. Also think about whether you want a human voice or an automated one — both exist, with different costs and coverage. Human services and fees vary by provider and plan, so compare included minutes, overage rates, and hours on current quotes rather than assuming one type always costs less.

Finally, check the technical fit before committing: confirm your carrier and product support the forwarding type you want, and confirm any service you choose works with your phone setup. Google Voice numbers, for example, do not support forwarding to an automated answering system, so a Google Voice line is not a workable source number for that kind of service.

• Match the forwarding type to when calls actually slip past you.
• Decide between all-call and conditional forwarding for day versus night.
• Compare plans on included minutes, overage pricing, and coverage hours.
• Confirm your carrier product supports the forwarding you need before signing up.
• Google Voice cannot forward to an automated answering system.

A few minutes of preparation prevents the most common forwarding mistakes — calls looping back, voicemail intercepting the service, or forwarding silently failing. Work through this list in order:

• Identify your exact carrier product (wireless, landline, hosted voice) — codes differ between products from the same carrier.
• Confirm the forwarding type you need is supported on your plan; some prepaid and regional lines only support all-call forwarding or none at all.
• Choose the destination number and have it written down in full 10-digit format.
• Activate forwarding using your carrier's code or portal, and wait for the confirmation tone or message.
• Place a real test call from a different phone to confirm the destination answers the way you expect.
• Check that your own voicemail will not grab the call first — all-call forwarding usually overrides voicemail, but no-answer forwarding may compete with it depending on ring settings.
• Note how to turn forwarding off (*73 on many carriers) so you can switch back quickly.