Someone just asked you to “look into replacing the phone system.” Maybe it’s your boss. Maybe it’s a client. Maybe it’s yourself — you’ve finally had enough of the old system and decided today is the day. Either way, you’re now staring at a project you’ve never done before with no clear starting point. Here’s what you actually need to do, in order, to get from “I don’t know where to start” to a specific quote you can evaluate and act on.

Step 1 — Gather the Information a Vendor Will Need From You

Before you call anyone, spend 20 minutes collecting the basic facts about your current setup. Every reputable phone system provider will ask for most of these. Having them ready means the first conversation is productive rather than a round-trip of follow-up emails.

Number of locations. Are you getting quotes for one office or multiple locations? Multi-site deployments change the recommendation significantly — they benefit more from cloud-hosted systems or a single on-premises system with remote extensions than a standalone system per location.

Number of people who need a phone. Count every employee who needs a desk extension — not just full-time staff, but anyone who needs to make or receive business calls. Include remote employees. This is the primary driver of both system sizing and monthly cost.

Current phone numbers. List every phone number your business uses — the main number, direct lines, fax numbers, toll-free numbers. All of these port to the new system and should be included in the quote scope. If any numbers are assigned to specific people (direct inward dial numbers for executives or staff), note that too.

Current phone lines. Look at your most recent phone bill. How many lines do you pay for? Are they copper POTS lines, a PRI/T1 circuit, or SIP trunks? This affects the transition plan and timeline. If you’re not sure — just bring the bill to the first call. A good provider can read it and tell you.

Current system. What system do you have now? Even if you don’t know the model, look for a label on the equipment in the phone closet. Brand and model names like “Panasonic KX-NS700,” “Nortel Norstar CICS,” or “Avaya IP Office” tell the vendor whether there are migration considerations, number porting complexity, or wiring compatibility factors to plan around.

Approximate call volume. How many inbound calls does the business typically receive in a day? How many outbound? This helps the vendor size the concurrent call capacity (number of SIP trunk channels) correctly. A rough estimate is fine — nobody expects you to have exact data.

Special requirements. Do you need call recording? An overhead paging system? An intercom? An elevator emergency phone? Voicemail transcription? Business texting? A door intercom that connects to the phone system? These are add-ons that need to be quoted separately if you need them — better to mention them upfront than to add them after the quote is finalized.

Step 2 — Know What a Good Quote Should Include

A complete business phone system quote should have three components. If any are missing, ask for them before making a decision.

Hardware. The phones themselves — make, model, and quantity. Reception phones with BLF key panels, standard desk phones, conference room speakerphones, cordless phones if needed. Some providers quote a system without specifying hardware models; push back on this, because a Yealink T57W is a different phone from a basic T31P and the price difference is significant.

Installation and configuration. This should be explicitly included and described. “Professional on-site installation” should mean a technician comes to your location, unpacks and assembles every phone, connects them to your network, configures extensions, programs the auto-attendant, sets up voicemail, configures ring groups, labels BLF keys, and trains your staff before leaving. If a quote just says “installation” without this level of specificity — ask what it actually includes. Self-install VoIP providers often call shipping you a box of phones “installation.”

Ongoing service costs. The monthly fees: phone system hosting or licensing, SIP trunk charges (the replacement for your phone lines), and any per-feature add-ons. Get the total monthly cost, not just a “starting from” price. A common tactic is to quote hardware and installation at a competitive price but structure the monthly costs to make up the margin over time.

Watch for this: Some providers quote a low per-user price but charge separately for every feature — voicemail, auto-attendant, call recording, mobile app — as line-item add-ons. By the time you add what you actually need, the monthly cost is significantly higher than the headline price. Ask for an all-in monthly cost for your specific configuration, not a base price.

Step 3 — Ask These Questions of Every Provider You Talk To

“Who installs it?” Is it a local technician sent by the provider, a subcontractor, or do you install it yourself? Local professional installation matters for training and post-install support.

“What happens if something breaks after installation?” How do you reach support? What are the hours? What’s the average response time? Get a specific answer, not a marketing statement. “24/7 support” means nothing if the actual answer time is measured in hours.

“How does number porting work and how long does it take?” A good provider handles porting entirely — you shouldn’t need to call your current carrier. Typical port timing is 2–5 business days. The old system should stay live until cutover.

“What if my internet goes down?” For VoIP systems, this matters. Ask specifically whether the system has failover and what it looks like — call forwarding, a backup circuit, or (the best answer) built-in cellular failover. A vague “yes we have failover” is not an answer.

“Can I see a reference from a business similar to mine?” Any provider who has actually installed systems for businesses like yours should be able to provide one. If they hesitate, that’s a signal.

What Phonewire’s Quote Process Looks Like

When you contact Phonewire, the first call is a 15–20 minute assessment — we’ll ask most of the questions in Step 1 above, and we’ll answer all the questions in Step 3. By the end of the call, we have enough information to produce a specific quote: named hardware models and quantities, an installation scope, and a total monthly cost.

You’ll receive a quote the same day or the next business day. It will list every phone by model, include the installation scope in plain language, and give you the total monthly cost for your specific configuration — not a per-user base price that requires math to convert into an actual bill.

If you’re evaluating multiple vendors, that’s completely fine — we’ll make the case for why Phonewire is the right choice on merit. To get started, call (800) 857-1517 or schedule a free consultation. The information you gathered in Step 1 is everything we need to give you a complete quote.