Business phone systems — from a 4-line PABX to enterprise IP PBX.
Grandstream and Yeastar IP PBX appliances, Excelltel analog PABX, Grandstream HD IP phones, conference units and headsets — designed for offices, branches, call centers and hospitality desks.
Modern voice for every office size.
Do Link delivers turn-key telephony: we choose between IP PBX and hybrid analog/SIP, dimension extensions and trunks, install IP phones, configure auto-attendants, call queues and call recording, and connect to SIP providers. Over 58 active SKUs across Grandstream UCM, Excelltel PABX and Yeastar — installed and supported by our technical team.
What we deliver under PBX & Telephony.
IP PBX Appliances
Grandstream UCM63xx and Yeastar S-series IP PBX appliances — SIP trunks, FXS/FXO ports, auto-attendant, call recording and remote workers.
- Grandstream UCM6301 / 6302 / 6304 / 6308
- Grandstream UCM6300A enterprise-grade
- Yeastar S50i for small / medium offices
HD IP Phones
Desk IP phones from 2 SIP entry-level GRP260x to professional GRP2670 with Wi-Fi, Bluetooth and color touch screen.
- Grandstream GRP2601 / 2602 / 2603 / 2604
- Grandstream GRP2614 / 2615 / 2616 / 2670
- Grandstream GXP1625 / 2135 / 2170
Analog PABX Systems
Excelltel MS and CS series PABX — cost-effective extensions from 1/8 up to 4/64 ports for offices that prefer analog lines.
- Excelltel MS 1/8, 2/6, 2/8, 3/8 mini PABX
- Excelltel CS 4/16, 4/24, 4/32, 4/64 PBX
- Compatible with Peaktel analog handsets
Extension Modules
Side modules that turn a single receptionist phone into a busy-lamp panel with dozens of pre-mapped extensions.
- Grandstream GXP2200EXT for 2170/2140/GXV3240
- Up to 128 mapped keys per console
- LCD presence indicators per extension
Headsets & Accessories
HD USB and Bluetooth headsets for call agents and customer support stations, plus wall-mount kits for tidy desks.
- Grandstream GUV3000 HD USB binaural headset
- Grandstream GUV3050 Bluetooth binaural headset
- GRP_WM_A wall-mount kit for GRP260x phones
High Availability
Add a hot-standby unit for mission-critical voice operations — automated failover, zero call drops on hardware failure.
- Grandstream HA100 automated failover module
- Pair with Grandstream UCM6510 for redundancy
- Cold and warm standby supported
Telephony brands we deploy.
Grandstream
Global leader for SIP IP-PBX appliances (UCM series) and a full lineup of HD IP phones and accessories.
Yeastar
Compact S-series VoIP PBX systems for small and medium businesses — solid pricing and feature-complete.
Excelltel
Cost-effective analog PABX systems with proven reliability for traditional offices and hospitality desks.
Peaktel
Affordable analog telephone sets with caller ID — companion handsets for Excelltel and other analog PABX systems.
Typical telephony deployments.
Corporate Offices
IP PBX with auto-attendant, queues, voicemail-to-email and call recording.
Hotels & Resorts
Room-to-room dialing, front-desk console, wake-up calls, mini-bar status codes.
Call Centers
Agent queues, supervisor monitoring, real-time wallboards and recordings.
Clinics & Hospitals
Nurse-call integration, patient extensions, paging announcements per floor.
Education
School-wide extensions, classroom call buttons, emergency intercom integration.
Retail Branches
Branch-to-HQ connectivity over SIP trunks, in-store paging and unified extensions.
Remote Workers
Soft-phone provisioning so home offices and field staff share the same PBX.
High Availability Sites
Hot-standby HA100 for organizations that can't afford a single point of failure.
Modernize your business phones with Do Link.
Tell us your extension count, current trunks (PSTN / SIP / GSM) and feature wish list — we will design a system that scales with you.