AT&T has said it expects to stop providing copper-based services across the large majority of its footprint by the end of 2029. Many offices are moving to VoIP now, on their own schedule, before a carrier notice forces the timing. The VoIP features you get in return change how the phones work day to day: calls follow staff to their cell phones, voicemail arrives as text, and the front desk stops being a bottleneck.
VoIP (Voice over Internet Protocol) carries calls over your internet connection instead of copper lines. Desk phones, a softphone on your computer and a mobile app can all use the same business number, and routing changes for a holiday or a storm closure happen in a web portal instead of a call to the phone company.
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The VoIP features that matter most
| Feature | What it does | Why it helps |
|---|---|---|
| Auto attendant | A recorded menu (“Press 1 for scheduling, 2 for billing”) routes callers to the right person or department | The front desk stops transferring every call. Set separate greetings for business hours, after hours and holidays. |
| Ring groups and call queues | A ring group rings several phones at once. A queue holds callers in order, plays a message and hands each call to the next free person. | Fewer voicemails and fewer lost callers |
| Mobile and desktop apps | Staff take business calls on a cell phone or laptop under the office number | Clients never get a personal number, and when someone leaves you disable their app and the relationships stay with you |
| Voicemail to email | Voicemails arrive in email as an audio file and a text transcript | Callbacks can be scanned and prioritized between meetings |
| Call reporting | Shows call volume by hour, missed calls, wait times and who answered what | Staff the phones at the right times and catch calls nobody answered |
| Microsoft Teams integration | Some phone systems connect to Teams through Direct Routing so staff make and take calls inside Teams | Keeps the call center features of a full phone system inside the app staff already use |
| AI transcription and receptionists | Full call transcription, summaries and an AI receptionist for common questions. Some business phone systems include these and let you choose the transcription provider. | Useful, as long as you know where the audio and text go before you turn it on |
How we set up business calling
For our clients, the client buys SIP trunks directly from the carrier, and we set up Teams calling through Operator Connect, a hosted business phone system, or both. Our guide to what SIP trunks are explains how that connection works.
Number porting is usually the step people worry about. Most of the ports we handle finish in under 15 days. If your staff already live in Teams, our Teams setup checklist covers the settings to get right before calling is added.
Rules that come with a business phone system
Call recording and privacy
Louisiana law allows recording when a party to the call consents, but some states require every party to agree. If you take calls from other states, a short “this call may be recorded” greeting is the simplest protection. Ask your attorney if you are unsure.
Recordings and transcripts at a medical practice, law firm, accounting firm or nonprofit can contain patient, client, donor or financial details. Limit who can open them, set a retention period, know where they are stored and whether they are encrypted, and in healthcare make sure your phone provider will sign a business associate agreement. Our healthcare IT page covers patient information across systems.
911
Two federal laws apply to multi-line business phone systems, and they matter more with VoIP because phones can move. Under Kari’s Law, anyone must be able to dial 911 directly, with no prefix like 9, and the system must notify a central location, such as the front desk, when 911 is called. This applies to systems manufactured, sold or installed after February 16, 2020. Under RAY BAUM’S Act, 911 calls must carry a dispatchable location, meaning the street address plus details like floor or suite. The compliance date was January 6, 2021, for fixed VoIP devices and January 6, 2022, for devices that move, such as softphones and remote users.
In practice, every desk phone needs a correct location, and remote and mobile users need a way to register where they are.
Business texting
U.S. carriers require organizations texting from standard local numbers to register their brand and use case through The Campaign Registry, a process called 10DLC registration. Carriers began blocking texts from unregistered 10DLC numbers in 2023. Your phone provider usually handles the paperwork, but approval can take time.
A setup checklist for a calm first week
- List users, phones, shared lines, fax numbers, door and alarm lines, and the call flows you want. Note which features of the current system people actually use.
- Check the network: enough upload capacity, switches that prioritize voice traffic, and Wi-Fi wherever people will use softphones.
- Plan for outages with a second internet connection and automatic failover, battery backup for network gear, and call forwarding to cell phones. Our post on UPS battery backup covers the power side.
- Gather recent bills and account details for the port, and schedule it for a slow day.
- Lock down the system: strong passwords and MFA on admin portals, international calling restricted unless you need it, and updates applied. Toll fraud on hacked phone systems can run up large bills fast.
- Set 911 locations for every phone and user before go-live.
- Give staff fifteen minutes on transferring, parking calls and the mobile app.
Most VoIP complaints trace back to the network, so we manage the phone system alongside the network underneath it through our business phone services. Book a 15-minute call to talk through your copper lines, your call flows and what a move to VoIP would change for your front desk.
Related reading
Frequently asked questions
What are the features of a VoIP phone system?
The ones offices use most are an auto attendant, ring groups and call queues, mobile and desktop apps on the office number, voicemail to email with a transcript, call reporting and Microsoft Teams integration. Some systems add AI transcription and an AI receptionist; check where the audio and text are stored before you turn those on.
Will VoIP work if the internet goes down?
Not over that connection. Plan for outages with a second internet connection and automatic failover, battery backup for network gear, and automatic call forwarding to cell phones. Staff can also take calls on the mobile app under the office number, so callers still reach someone while the office connection is down.
Can I keep my phone number if I switch to VoIP?
Yes, in most cases. Moving an existing number to a new provider is called porting. Gather recent bills and account details for the current lines, include fax, door and alarm lines in your list, and schedule the port for a slow day. The new provider handles the request with the old carrier.
What are the 911 requirements for VoIP?
Two federal laws apply to multi-line business phone systems. Kari’s Law requires direct 911 dialing with no prefix and a notification to a central point, such as the front desk, when someone calls 911. RAY BAUM’S Act requires 911 calls to carry a dispatchable location, meaning the street address plus floor or suite, including for softphones and remote users.
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