Service 05 / 07 · Phone Systems & VoIP
Business Phone Systems & VoIP Installation in Illinois
Business phones without the phone company headache.
Your office phones should ring at the right desk, route after hours, and follow you when you leave the building. AITGD plans and installs modern VoIP systems, including Microsoft Teams calling. We handle the number porting and retire the analog lines you've been paying for since 2009.
- 100% Numbers ported, none lost
- 01 Voice VLAN with QoS
- 08 Line items in scope
Scope / 01–08
VoIP installation, Microsoft Teams calling, and number porting: what's included.
- VoIP system selection and setup, matched to your size and call flow
- Microsoft Teams calling migration: your business number in the app you already use
- Desk phone provisioning and installation for staff who want a handset
- Call routing, auto-attendants, ring groups, and voicemail-to-email
- Number porting that moves your existing numbers without losing them
- Fax and analog line review to find what still needs a line and what's pure waste
- Network readiness check: VLANs and quality-of-service so calls stay crisp
- Training for staff and whoever manages the auto-attendant
Contract renewals, office moves, and the switch to VoIP.
The usual trigger is a contract: your phone provider's renewal lands and the price makes you finally ask what you're paying for. Office moves are another. Porting numbers to VoIP is easier than dragging old copper service to a new address. If your team is already living in Teams, moving calling there often costs less than your current bill. And if you're still paying for a fax line "just in case," a line review usually finds a few hundred dollars a month in zombie services.
Common questions.
Will we keep our current phone numbers?
Yes. Numbers belong to you, not your carrier, and porting is a standard process that typically runs two to four weeks. We manage it so your old service stays live until the moment the new system answers. Nobody calling you notices a thing.
Should we use Microsoft Teams for calling or a separate VoIP system?
If your team already lives in Teams, adding calling there usually wins: one app, one vendor, often a lower bill than a separate phone system. A dedicated VoIP platform still makes sense for call-heavy front desks and offices that want handsets everywhere. We install both, so the recommendation follows your call flow, not a reseller commission.
VoIP call quality worries us. Will calls sound okay?
On a network built for it, VoIP sounds better than the copper lines it replaces. The horror stories come from phones dumped onto congested networks with no priority. We put voice on its own VLAN with quality-of-service rules, and we test before cutover. This is why the network work and the phone work should be handled together, by one provider, in the right order.
Do we even need desk phones anymore?
Many offices don't. Reception, conference rooms, and heavy phone users usually want a handset; everyone else is often happier with a headset and the Teams or VoIP app on their computer and cell phone. Mixing both is normal. We spec it desk by desk instead of selling you a phone per head.
Ready to get your office IT handled?
Tell us about your office. You'll get a clear scope and a real quote.
info@aitgd.com