How to Forward Calls to an AI Answering Service

Forwarding your contractor business phone to an AI answering service sounds like a 5-minute task. For some platforms, it is. For others, the forwarding rules are buried in admin menus that require careful configuration. This post walks through the exact steps for the major VoIP platforms and traditional carriers.

What you need before you start

1. Your AI answering service's forwarding phone number. The vendor provides this when you sign up.
2. Admin access to your business phone platform.
3. A test phone (your personal cell) to verify the forwarding works.
4. 15-30 minutes for setup and testing.

If you don't have admin access, get it before you continue. The setup can't be done from a user account.

Forwarding from RingCentral

RingCentral has the most granular forwarding controls of the major VoIP platforms.

1. Log in to RingCentral admin.
2. Go to Users → select the user (or extension) whose calls you want to forward.
3. Click Call Handling & Forwarding.
4. Choose After Hours (or Business Hours if you're doing 24/7 forwarding).
5. Set the rule: Forward calls to → External number → enter the AI service number.
6. Set ringing behavior: typically "ring my own line for 2 rings, then forward" or "forward immediately".
7. Save.

For business-hours-vs-after-hours logic, set up two separate forwarding rules with different schedules.

Test by calling your RingCentral number after-hours from your personal cell. You should hear the AI greeting.

Forwarding from Dialpad

1. Log in to Dialpad admin.
2. Go to Office → Departments (or Users).
3. Select the department or user.
4. Click Routing.
5. Under Forwarding or Coverage, add the AI service number.
6. Set the rule type: Always, After hours, or When busy.
7. Save.

Dialpad's after-hours scheduling is set at the department or office level, separately from individual user routing.

Forwarding from OpenPhone

1. Log in to OpenPhone admin.
2. Go to the phone number's Settings.
3. Click Call handling.
4. Choose Forward calls to → External number → enter the AI number.
5. Set the schedule (business hours, after hours, or always).
6. Save.

OpenPhone has clean after-hours scheduling and supports time-of-day routing natively.

Forwarding from Vonage Business

1. Log in to Vonage admin.
2. Go to Phone Numbers → select the number.
3. Choose Call Forwarding → Conditional or Unconditional.
4. For conditional: configure the schedule (after hours, busy, no answer).
5. Enter the AI service number.
6. Save.

Forwarding from Google Voice

Google Voice's forwarding is at the account level, not per-call-type.

1. Open Google Voice → Settings (gear icon).
2. Calls tab.
3. Add a new forwarding number → enter the AI service number.
4. Set rules: ring this number, or forward to this number.
5. Save.

Google Voice doesn't have native after-hours scheduling at the same granularity as enterprise VoIP. For time-of-day routing, you may need a different platform or workaround.

Forwarding from a traditional carrier line

For analog/POTS lines or basic carrier business lines:

1. Call forwarding always: Dial *72, wait for tone, enter the AI service number, wait for confirmation, hang up.
2. Call forwarding busy: Dial *68 (varies by carrier).
3. Call forwarding no answer: Dial *92 (varies by carrier).
4. Cancel all forwarding: Dial *73.

Carrier codes vary. Check with your specific carrier (AT&T, Verizon, T-Mobile, Spectrum, etc.) for the right codes.

Traditional carrier forwarding doesn't support time-of-day rules natively. For after-hours-only routing, you need to either toggle manually each evening (impractical) or upgrade to a VoIP platform.

Setting up time-of-day routing

If your platform supports it (RingCentral, Dialpad, OpenPhone, Vonage), set up:

• Business hours rule: Mon-Fri 7 AM - 6 PM. Route to your normal handling.
• After-hours rule: All other times. Forward to AI service.
• Holiday rule: Specific dates. Forward to AI service.

The schedule object is usually stored at the office or account level and referenced by individual forwarding rules.

Testing the forwarding

Before going live, run these tests:

1. In-business-hours test. Call your business number at 10 AM weekday. Confirm the call rings your normal handling, NOT the AI.
2. After-hours test. Call your business number at 8 PM weekday. Confirm the call goes to the AI.
3. Edge test. Call at 6:55 PM (last 5 minutes of business hours) and 7:05 PM (first 5 minutes after). Confirm both route correctly.
4. Weekend test. Call Saturday afternoon. Confirm AI answers.
5. Holiday test. Manually set a date as a holiday and confirm AI answers.

If any test fails, fix the rule before going live. Don't test in production during real customer hours.

What to verify on the AI service side

1. Vendor confirms inbound calls are arriving. Check the dashboard for incoming call records.
2. The greeting is correct. "Thanks for calling [your business], this is [AI assistant name]" or similar.
3. The intake script is your script. Listen to a recorded test call.
4. The handoff numbers are correct. Make sure the on-call contact gets the test alert.

Common forwarding mistakes

1. Forwarding to the wrong number. Mistype the AI service number. Test first.

2. Forwarding turned on globally instead of after-hours. Customers calling at 10 AM hear the AI instead of your office. Verify the schedule.

3. Caller ID lost in forwarding. Some platforms strip the original caller ID. Confirm the AI service shows you the real customer number, not your business number.

4. Voicemail still active as backup. Some platforms have voicemail as fallback even with forwarding active. If the AI is reachable, this should be off. If the AI is down, voicemail is the right fallback.

5. Holiday schedule not updated for the new year. Update annually. A New Year's Day call that lands on your office voicemail is a missed call.

Going live

After testing passes:

1. Activate the live forwarding rule.
2. Monitor the first 24 hours actively. Listen to every captured call.
3. Verify the dashboard data is correct.
4. Confirm no calls dropped.

Most issues show up in the first 24-72 hours. After a week of clean forwarding, you can step back from active monitoring and audit weekly instead.

For more, see the answering service setup checklist, the emergency call routing setup guide, and the call forwarding guide.

FAQs

What happens if the AI service is down?

Your forwarding will likely time out and return to voicemail or your fallback. Confirm with your AI vendor what the SLA is and how outages are communicated. Vendors with >99.9% uptime are the right tier.

Can I forward only some types of calls?

Most VoIP platforms support conditional forwarding (after-hours only, when busy, when no answer). Per-caller forwarding (forward calls from specific numbers) is less common but available on some platforms.

Does forwarding cost extra?

Some carriers charge for forwarded minutes. VoIP platforms usually include forwarding in your plan. Check with your platform.

How do I undo the forwarding if I need to?

Cancel the forwarding rule in your platform (or dial *73 on traditional lines). Calls go back to your normal handling immediately.