Grandstream
Summit DNC is an authorized Grandstream reseller and installation partner. We sell, deploy, and support the full Grandstream product line — IP phones, PBX systems, video conferencing, ATAs, and gateways — for businesses across Southern California.
Products We Sell
Grandstream Product Lines
We sell, install, and support the full Grandstream product line. Here are the key products we deploy for our clients.
GRP Series IP Phones
Carrier-grade IP phones with Gigabit ports, PoE, HD audio, and integrated Bluetooth/Wi-Fi on select models. Ideal for offices of any size.
GXP Series IP Phones
Enterprise-grade desk phones with up to 6 SIP accounts, color LCD, PoE, and EHS headset support.
UCM6300 Series IP PBX
On-premise IP PBX appliances supporting up to 3,000 users with built-in call recording, IVR, video conferencing, and CRM integration.
GVC Series Video Conferencing
Full HD and 4K video conferencing systems with SIP/H.323 support, screen sharing, and integration with major cloud platforms.
HT800 Series ATAs & Gateways
Analog telephone adapters and VoIP gateways for connecting legacy phones and fax machines to modern VoIP networks.
Why Summit DNC
Your Grandstream Installation Partner
Authorized Partner
We are an authorized Grandstream reseller with direct access to product lines, licensing, and vendor support.
Expert Installation
BICSI-certified technicians handle design, installation, configuration, and testing to manufacturer specifications.
Full Integration
We integrate Grandstream products with your existing network, security, and communications infrastructure.
What We Deliver
Deployment Services
When you purchase Grandstream through Summit DNC, you get more than hardware — you get a fully designed, installed, configured, and supported solution.
System design and capacity planning
UCM PBX initial configuration and provisioning
Handset deployment and auto-provisioning
SIP trunk configuration and number porting
Call flow programming (IVR, ring groups, queues)
Network QoS optimization for voice traffic
End-user training and admin handoff
Ongoing maintenance and firmware updates
Industry Applications
Grandstream in Action
Deploy a complete on-premise phone system with UCM PBX and GRP phones — no monthly per-seat fees, full call recording, and remote extension support.
Outfit hotels with GHP series hospitality phones for guest rooms and GRP phones for front desk and back office, all managed from a single UCM PBX.
HIPAA-aware deployment with encrypted SIP, call recording for compliance, and nurse call integration via analog gateways.
Related Services
Services That Complement Grandstream
Common Questions
Grandstream FAQs
Is Summit DNC an authorized Grandstream dealer?
Yes. Summit DNC is an authorized Grandstream reseller and certified installation partner in Southern California.
Does the Grandstream UCM PBX require monthly fees?
No. The UCM6300 series is a one-time hardware purchase with no recurring license fees. You only pay for SIP trunking from your carrier.
Can Grandstream phones work with cloud PBX services?
Yes. GRP and GXP series phones are compatible with all standard SIP platforms including RingCentral, Zoom Phone, and Microsoft Teams Phone.
What warranty comes with Grandstream products through Summit DNC?
All Grandstream products carry the manufacturer warranty (typically 1-3 years). Summit DNC provides installation warranty and optional extended support contracts.
Compare Options
Related Technology Comparisons
Side-by-side comparisons relevant to Grandstream infrastructure decisions.
VoIP vs Landline: Which Phone System Is Right for Your Business?
Compare VoIP and traditional landline phone systems. Learn about cost savings, features, reliability, and which solution is best for your Southern California business.
VoIP vs SIP Trunking: Understanding the Difference for Business Phone Systems
Compare VoIP hosted phone systems with SIP trunking. Learn which approach delivers better value based on your existing infrastructure, call volume, and business needs.
VoIP vs PBX: Modern Phone System Comparison for Business
Compare VoIP phone systems with traditional PBX. See cost, feature, and infrastructure differences to choose the right phone solution for your business.
Managed vs Unmanaged Switches: Which Network Switch Is Right for Your Business?
Compare managed and unmanaged network switches. Learn the differences in features, control, cost, and security to choose the right switch for your network.
Get a Quote for Grandstream Solutions
Contact Summit DNC for expert Grandstream product selection, installation, and ongoing support. Free site survey included.