Phone systems for business and government · Wichita, Kansas
Old-fashioned service.
A modern phone system.
Cloud phone systems for businesses, cities, counties and schools, from a Wichita advisor, installed and supported by the GranSun PBX team. Desk phones, mobile app and desktop app, all on one number.
Wichita through and throughYour advisor and your phone platform are both right here in Wichita.
Keep your numberWe port your numbers. Your callers never notice the switch.
Keep your phones237 models from 20 brands work out of the box.
Rent or buyNew phones without a big upfront bill.
What you get
Every call answered, from any desk, phone or laptop.
Auto-attendant and call routing
"Press 1 for sales." Route calls by time of day, with ring groups and call queues.
Mobile and desktop apps
Take your business line on your cell or laptop, with find-me, follow-me included.
Voicemail in your inbox
Messages arrive by email, transcribed by AI, so you can read them in a meeting.
Texting, fax and video
Business texting, web fax, HD conferencing and screen sharing in one app.
Call recording and reports
See who called, how long they waited and how each call was handled.
Paging and door phones
Overhead paging, intercom and SIP door entry run on the same system.
Business and government
Built for offices, city halls and everything between.
One platform runs a five-person office or a county with many buildings. Each site, department and phone is managed from one place.
Cities and counties
Department call trees, after-hours routing and paging across buildings.
Schools
Classroom phones, intercom, door phones and front-office queues.
Professional offices
Receptionist tools, call recording and CRM integration.
Multi-site businesses
One system and one extension plan for every location.
Pay for what each person needs
Mix plans across your team. The front desk, the warehouse and the boss rarely need the same thing.
For people on the go
Advance
Desktop and mobile apps, texting, video meetings, web fax and call-center tools.
For the office
Basic
Unlimited calling, voicemail to email with transcription, and conference calls.
For shared phones
Low Usage
Breakrooms, lobbies, warehouse floors and guest rooms.
For devices
Internal
Door phones, paging speakers and intercoms.
Switching takes four steps
Free review
We look at your lines, phones and current bill, and suggest the right mix.
Number port
We move your numbers. Your old service keeps working until the switch.
Setup
Phones arrive programmed, with your greetings and call flow built.
Training
A short walkthrough for your team, and real support after go-live.
Ring the bell. We'll answer.
Tell us about your business or agency and we'll send a plan and a quote.
- No obligation, no pressure
- Quotes for one office or many buildings
- Advice on keeping your current phones