The answer up front: you do not need to change your phone number to use an AI receptionist. Conditional call forwarding, a feature built into virtually every carrier, sends a call somewhere else only when you do not answer, are on the line, or are unreachable. Your phone still rings first. The AI only catches what you miss. And it is reversible with one code.

Conditional vs. unconditional: the distinction that matters

Unconditional forwarding sends every call away immediately; your phone never rings. Conditional forwarding keeps your phone as the first stop and forwards only on no answer, busy, or unreachable. For most businesses the right setup is conditional: you answer when you can, and nights, job sites, and double-booked moments go to the AI instead of voicemail.

GSM carriers (AT&T, T-Mobile, and most others)

Most carriers use the GSM standard dial codes. Replace DEST with the full destination number (including area code; some carriers want a leading 1):

  • Forward when unanswered: dial **61*DEST# and press call. On many carriers you can set the ring time before forwarding with **61*DEST**SS#, where SS is seconds (5–30).
  • Forward when busy: **67*DEST#
  • Forward when unreachable (phone off / no signal): **62*DEST#
  • Check status: *#61#, *#67#, *#62#
  • Cancel all conditional forwarding: ##004# (or per-type: ##61#, ##67#, ##62#)

Verizon

Verizon uses its own star codes: *71 + DEST activates conditional forwarding (busy / no answer), *72 + DEST forwards all calls, and *73 cancels. Dial them like a phone number and wait for the confirmation tone.

Landlines, VoIP, and business phone systems

Traditional landlines commonly use *72/*73 (all-call) and, with some providers, *90/*91 for busy and *92/*93 for no-answer, but PBX and VoIP systems (RingCentral, Ooma, Grasshopper, and the like) handle forwarding in their admin portal instead of dial codes, usually under "call handling" or "find me / follow me." Set the no-answer destination there.

The honest fine print

Three things to know before you rely on it. First, codes vary: prepaid plans, MVNOs, and some business accounts disable or alter these codes, so treat the above as the standards and confirm with your carrier if a code errors. Second, test immediately: after activating, call your own number from another phone, let it ring out, and confirm the AI answers, a thirty-second test beats a week of silent misconfiguration. Third, caller ID on forwarded calls varies by carrier; a good AI receptionist asks for and confirms the caller's callback number rather than trusting the forwarded ID.

What to put on the other end

The destination number should be a line where something competent picks up. With Rocketship, setup is three questions: paste your website (Sophie reads it and shows you what she learned), tell her who to hand tricky calls to, and point your forwarding at your Rocketship line, from $24.99/month plus a $5 line. She answers 24/7 from your approved playbook, books appointments on the call, and transfers to a human live when needed. Hear exactly what your missed calls would get: (405) 873-9151. Setup guides by industry: home services · property management · government.

Codes reflect GSM standards and carrier documentation as of mid-2026; always verify with your carrier. For press inquiries: support@deployrocketship.com