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TCSS — Your Phone Simplified.
Equipment

Phones that just work — or bring your own.

Every phone we ship is provisioned before it leaves the warehouse — plug it in and it's already on your system. Already have SIP-standard hardware you like? Keep it.

Grandstream Certified Reseller

Certified reseller — genuine Grandstream hardware.

Grandstream GXP desk phone, provisioned and ready to plug in

Every unit arrives pre-configured for your extensions — no on-site tech visit.

The lineup

Grandstream hardware, provisioned and ready

Desk phones through PBX appliances — pick what the office needs, or mix and match.

POPULAR
Grandstream GXP series IP desk phone

Grandstream GXP Desk Phone

  • HD voice across multiple lines
  • Gigabit Ethernet passthrough for your laptop
  • Provisioned before it ships — plug in and ring
  • Works with Hosted PBX and On-Prem alike

Best for: Every desk that answers a business line

Grandstream GXV series touchscreen video phone

Grandstream GXV Video Phone

  • Color touchscreen with built-in camera
  • Video calling alongside standard voice
  • Runs the same web portal as every extension
  • A polished look for reception and exec desks

Best for: Front desks and video-first offices

Grandstream GAC2500 conference phone

Grandstream GAC2500 Conference Phone

  • 360° HD audio pickup for full rooms
  • Bluetooth and Wi-Fi built in
  • Expandable microphones for larger tables
  • Conferencing included, no per-minute add-on

Best for: Conference rooms and huddle spaces

Grandstream DP750 DECT cordless base station and handset

Grandstream DP750 Cordless (DECT)

  • Base station plus cordless handsets
  • Roam the whole building mid-call
  • Long standby and talk time per charge
  • No fixed desk required to stay reachable

Best for: Warehouses, retail floors, and clinics

Grandstream HT812 analog telephone adapter

Grandstream HT812 Analog Adapter

  • Two FXS ports for analog phones or fax
  • Keep the physical fax machine you already own
  • Bridges legacy analog gear onto Hosted PBX
  • Plug-and-dial setup, no rewiring

Best for: Fax machines and legacy analog equipment

Grandstream UCM on-premise PBX appliance

Grandstream UCM PBX Appliance

  • An on-site PBX you own outright
  • Up to 500 extensions (model-dependent)
  • TCSS-managed provisioning available
  • The hardware behind our On-Prem plan

Best for: Offices that want the box on site

Grandstream Wi-Fi access point

Grandstream Wi-Fi Access Point

  • Enterprise Wi-Fi on the same network as your phones
  • Managed alongside your PBX, not a separate vendor
  • PoE powered — no extra electrical wiring
  • Solid coverage for softphones and mobile devices

Best for: Offices running softphones over Wi-Fi

Hardware pricing is set up with your plan — ask sales for a quote.

Bring Your Own Device

Already have phones you like? Keep them. Hosted PBX and On-Prem both run on open SIP standards, so most existing SIP-compatible desk phones, softphones, and ATAs register right onto your system — no forced hardware purchase to get started.

SIP-standard, no vendor lock-in We'll help you configure it

Let's plan your hardware.

Tell us how many desks, and we'll put together a phone plan — provisioned, shipped, ready to ring.