Every FlyNumber already makes and receives calls on its own. Our cloud phone system is an optional add-on for when you need call routing: a voice menu, a team sharing numbers, business hours or call recording.

The rule of thumb: one person with a softphone? Use FlyNumber SIP, it's included with your number. A team, a menu, business hours or recording? Add the phone system. Not sure? Read Do I need the phone system?

Ring several people at once, on phone numbers and VoIP destinations, or one after another.

Organize a complex call flow across workspace tabs.

Make outgoing calls with your FlyNumber and pay like a local (also available without the phone system via FlyNumber SIP).

Add up to 30 users for one flat rate.

Connect as many FlyNumbers as you need, same price.

Cloud connected to various devices including a server, laptop, smartphone, and desktop monitor.
  • A flat $14.95 a month for your whole account, plus the price of the phone number(s) you connect. No setup fee, no per-user fee.
  • Same discounts as numbers: 10% off quarterly, 15% off semi-annual, 25% off annual. See pricing.
  • Outgoing calls and forwarding to regular phones are billed per minute from your prepaid balance.
  • Using the phone system is optional. Switch any number between it and FlyNumber SIP from your FlyNumber panel.

Phone system's stand-out features

Interactive phone system grid interface showing module connections
Build call flows on a live grid
The system works by moving and connecting modules on a live grid. Changes are saved instantly as you move and connect modules.

Mobile and Desktop App

The phone system comes with its own free app for iOS, Android, Windows, and macOS. Set up the phone system app and take your business phone system anywhere.

Using FlyNumber SIP instead? Any SIP app works, like Zoiper, Linphone or Acrobits Groundwire, with step-by-step setup in our docs.

Phone system app features include:

  • Make and receive calls using any of your FlyNumbers connected to the phone system
  • Push notifications for incoming calls
  • Call history and missed call tracking
  • Choose which FlyNumber shows as caller ID on outbound calls
  • Call pickup, transfer, and on-demand recording while you're on a call
FlyNumber phone system app interface showing number management and call controls

The Phone System Guide

FlyNumber phone system interface showing phone numbers for NYC Headquarters, Private for John (UK), Brazil Sales, and Our SA Number (South Africa).
Add multiple phone numbers
Connect as many FlyNumbers as you like. Configure each phone number independently or route them using existing call flow logic.
Search interface in FlyNumber phone system displaying search results for 'Mike' including objects, phone numbers, delivery methods, and contacts related to Mike Brown.
Search the grid
Easily search for anything you've ever created in the phone system.
A screenshot of a phone number connected to a fax module in the FlyNumber phone system interface.
Receive incoming faxes
Use our fax module to receive faxes sent to your FlyNumber as PDF. Not all numbers can receive fax, check coverage.
A screenshot showing the settings for a SIP account in the FlyNumber phone system interface, including caller ID and SIP credentials.
SIP accounts
Create SIP accounts for your users inside the phone system and use them for incoming and outgoing calls. Only need SIP credentials for one number? FlyNumber SIP gives you those without the phone system.

Phone system or FlyNumber SIP?

Both let you make and receive calls with your FlyNumber. FlyNumber SIP is included with every number: your own SIP credentials for a softphone, desk phone or PBX, up to 5 devices per number, voicemail built in. (SIP is the standard that VoIP apps and desk phones use.)

The phone system adds the routing logic on top, for $14.95 a month. Find the row you need below and it tells you which one to use. You can switch a number between the two any time from your FlyNumber panel.

Illustration of a winding road leading to a distant building, representing the path from a single FlyNumber to a full phone system.
I want to... FlyNumber SIP (included) Phone system ($14.95/month)
Receive calls Yes Yes
Make outgoing calls with my FlyNumber as caller ID Yes, per-minute rates Yes, per-minute rates
Use a softphone or desk phone Yes, any SIP app or device Yes, SIP accounts or the phone system app
Ring more than one device Yes, up to 5 devices per number Yes, ring groups with any mix of phones, SIP accounts and apps
Get voicemail Yes, in your Voicemails inbox Yes, voicemail module
Send and receive SMS Yes, in your panel: receive on numbers with SMS in, send on numbers with SMS out Same, SMS is handled in the panel either way
See my call logs Yes, in your panel Yes, call analytics in the phone system
A voice menu (press 1 for sales, 2 for support) No Yes
Business hours and time-based routing No Yes
A hold queue No Yes
Record calls No Yes
Up to 30 users with their own extensions No Yes
Block specific callers No Yes, blocklist

The full feature map, with a link to each setting, is in Do I need the phone system?

Four ways to use your FlyNumber

Watercolor illustration of a desktop computer, server, smartphone, tablet and laptop, the kinds of devices you can register with FlyNumber SIP.
FlyNumber SIP
Your own SIP credentials from FlyNumber (SIP is the standard that VoIP apps and desk phones use). Register any SIP app, desk phone or PBX, up to 5 devices, and make and receive calls, with voicemail built in. Incoming calls are included with your number's monthly rate; outgoing calls are billed per minute from your prepaid balance. Set up FlyNumber SIP.
A globe with a telephone handset, indicating call forwarding across the world.
Forward to a Phone Number
Send calls to any mobile or landline, anywhere in the world, at a low per-minute rate from your prepaid balance. How forwarding works.
A globe surrounded by various communication devices, representing global VoIP connectivity.
Forward to SIP / VoIP Address
Already use a VoIP provider, PBX, softphone service or AI voice platform? Point your FlyNumber at its SIP address and calls arrive there with no per-minute charges on incoming calls: unlimited incoming minutes*. Set your FlyNumber to VoIP, connect an AI voice platform like VAPI or ElevenLabs, or see how it works with any VoIP solution.
Cloud connected to various devices including a server, laptop, smartphone, and desktop monitor.
Cloud Phone System (optional)
Need a voice menu, ring groups, queues, business hours or call recording? Add our cloud phone system for $14.95/month flat, one price for your whole account, with up to 30 users. Usually you don't need it: see when it's worth adding.

Note

Switch between them any time in your panel. A fifth option, Park the Number, stops the number ringing anywhere (callers hear busy) with no call charges.

Flexibility is key

Illustration of a smartphone with a cloud symbol, surrounded by various connected devices and icons, symbolizing a cloud-based phone system with multiple devices.

Use any combination of devices and/or software to make and receive calls.

Forward calls to a regular phone number and a VoIP solution at the same time or sequentially.

Create SIP accounts for your team and call between extensions by dialing a short number.

Differentiate which FlyNumber is calling by modifying the incoming caller-ID.

Route calls based on the phone number or prefix calling your FlyNumber (e.g. send callers from the US and Canada one way and everyone else another).

Built for teams and businesses

Cartoon bird dressed in a business suit, holding a briefcase and talking on a mobile phone.

Privacy

Call recordings, voicemails and faxes go where you send them: your email, Google Drive, Dropbox, OneDrive or FTP/SFTP. You choose the delivery method.

Texts live in your FlyNumber panel's SMS inbox and are emailed to you as well. SMS is handled in the panel, not the phone system.

Encrypted calling (TLS for signaling, SRTP for audio) is available for the phone system's SIP accounts; contact support to enable it on your account.

Restrict each SIP account to allowed IP addresses only.

Illustration of a telephone secured by a protective shield, symbolizing phone privacy and security.

Modules for every use case

Illustration of a phone icon with multiple call buttons, representing a phone call menu or options interface.
Call Menu / IVR
Create voice menus for callers - press 1 for sales, 2 for support, or set up custom extensions like 100 for John, 200 for Sally.
Illustration of a smartphone with a list of items and icons representing cloud storage and data sharing.
Store files in the cloud
Save voicemails, greetings and call recordings to the cloud automatically. Configure delivery methods like Google Drive, Dropbox, OneDrive and FTP/SFTP, or use cloud storage integrations.
Illustration of a clock with directional arrows and surrounding icons, symbolizing time-based call routing.
Time-based routing
Use our time router to route calls based on the day and time, or set up time schedules for organization-wide business hours.
Illustration of a smartphone screen showing a contact profile picture, representing Caller ID functionality.
Make outgoing calls
Call out with your FlyNumber as the caller ID at per-minute rates from your prepaid balance, with a local rate when you call the number's own country (call like a local, pay like a local). Also available without the phone system via FlyNumber SIP.
Illustration of a smartphone screen displaying a spam warning with a blocked symbol, representing spam phone call detection.
Block spam calls
Use our blocklist feature to block specific numbers, area codes, anonymous calls, or calls with text in the caller ID.

Technical Specifications

  • Audio formats (for voicemail greetings, IVR menus etc.) - mp3, m4a, wav, flac, and ogg.
  • Call recordings arrive in mp3 format with a bit rate of 16 kbps and a sample rate of 8 kHz.
  • SIP account transport protocols: UDP, TCP, TLS, and WSS (TLS and WSS are enabled on request).
  • Supported codecs - OPUS, G722, PCMU, PCMA, G729 and GSM.
  • Codec for DTMF transport: telephone-event.
  • We use UTC offsets and daylight-saving rules provided by the IANA Time Zone Database External Link Icon.
  • The default timezone is GMT (+0).
  • Full details in the technical specifications page of the guide.
Detailed technical drawing of a vintage phone device with various mechanical components and specifications.

Frequently asked questions

Do I need the phone system to make outgoing calls?

No. Set your number's Call Handling to FlyNumber SIP and you can make and receive calls from any SIP app, desk phone or PBX, with your FlyNumber as the caller ID. Incoming calls are included; outgoing calls are billed per minute from your prepaid balance. The phone system makes the same outgoing calls at the same per-minute rates. Some number types restrict outbound calling due to local regulations.

How much does the phone system cost?

$14.95 a month flat for your whole account, plus the monthly price of each FlyNumber you connect. There's no setup fee and no per-user fee, and the same discounts as numbers apply: 10% off quarterly, 15% off semi-annual, 25% off annual. Outgoing calls and forwarding to regular phones are billed per minute from your prepaid balance. See pricing and phone system billing.

Where are call recordings, voicemails and faxes stored?

They're delivered to the destination you choose in the phone system: your email, Google Drive, Dropbox, OneDrive or FTP/SFTP. Call recording is only available in the phone system; it isn't part of FlyNumber SIP or forwarding.

Can I switch a number between the phone system and FlyNumber SIP?

Yes, any time. Open the number in My FlyNumbers and change its Call Handling. Moving a number off the phone system doesn't cancel the phone system itself; that's managed on the Phone System page in your panel.

What happens if I stop paying for the phone system?

Turn off Auto-Renew on the Phone System page and it runs to the end of the period you've paid for, then enters a 5-day grace period. Your call flows, menus and SIP accounts are kept during grace and you can restore from your prepaid balance. After that the phone system and its configuration are deleted. Your FlyNumbers aren't deleted, but any number routed through the phone system is parked (it doesn't ring anywhere) from the moment grace starts: restoring routes it back, otherwise give it a new Call Handling from its page in My FlyNumbers.

*Unlimited incoming does not apply to toll-free or metered numbers. Some number types restrict outbound calling due to local regulations.

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Get the phone system enabled on your account today

  • Add it at checkout with a new FlyNumber, or later from the Phone System page in your panel.
  • Pay by card, PayPal or prepaid balance. Monthly, quarterly, semi-annual or annual.
  • No contracts. Auto-Renew is on by default; turn it off any time and the phone system runs to the end of the period you've paid for.
  • Connect as many FlyNumbers as you like at the same flat price. Numbers start at $2.95 a month, see coverage.
  • We've been in business for well over a decade.
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