yealink.com的 10 大竞争对手

888voip.com

Learn more about Products and our other VoIP solutions. We are the preferred distributor for partners and resellers of VoIP solutions.

voipsupply.com

featuring the most robust voip specific product online catalog, that contains over 5,000 products from over 60 of the industry's leading manufacturers, at voip supply you'll find everything you need for voip, and cloud phone service.

voipon.co.uk

The Fanvil X4U is an enterprise-level two screen IP Phone available from VoIPon.co.uk.

justcall.io

Need help with a project for JustCall? Find the Service Partner with the best skills to assist you.

3cx.com

A powerful, all-in-one business phone system and contact center solution crafted for companies with 25+ users. Now featuring Agentic AI to handle call routing, screening and 24/7 support.

extron.com

Last Updated and Effective Date: 9/10/2025

explore.zoom.us

Modernize workflows with Zoom's trusted collaboration tools: including video meetings, team chat, VoIP phone, webinars, whiteboard, contact center, and events.

ipphone-warehouse.com

Description Specifications Reviews Description Grandstream UCM6304 is an enterprise grade IP PBX appliance for business communications — with no license fees. UCM6304 enables VoIP telephony and video conferencing for up to 2000 users and 300 concurrent calls (200 when using SRTP encryption) with an integrated conference bridge for up to 200 participants in an audio conference and up to 4 rooms and 40 participants in a video conference at 1080p Full HD resolution. Perfect for a medium to large business who want to control their communications, UCM6304 supports HD video conferencing with a full suite of features — screen sharing, whiteboarding and more. For VoIP telephony you get all the features — caller ID, call queue, customizable call distribution and more. UCM6304 centralizes control for all your communications — plus intercom, access control, analytics, and more. You even get an auto attendant with up to 5 levels of interactive voice response. Grandstream UCM6304 has an easy to read display — simplify management. It protects your communications with enterprise grade security — secure boot, SRTP encryption and more. The integrated NAT router supports both router mode and switch mode. UCM6304 has four FXS ports to connect to analog telephone lines and four FXO ports to connect to PSTN lines. The Grandstream UCM6300 Series telephony operating system is based on Asterisk 16. © 2021 IP Phone Warehouse. All rights reserved, including the right to reproduce this product description or portions thereof in any form whatsoever. Grandstream UCM6304 Quick Specs: Call Capacity: Users: 2000 Concurrent Calls: 300 Concurrent SRTP Calls: 200 Conference Bridge: Video Conferencing (rooms): 4 Video Conferencing (parties): 40 Audio Conferencing: 200 Physical Connectors: FXO Ports: 4x RJ11 FXS Ports: 4x RJ11 Ethernet: 3x Gigabit PoE+ USB: 2x USB-A 3.0 Edge Storage: 1x SD Card Audio Codecs: Opus, G.711u/a, G.722, G.722.1, G.722.1C, G.723.1, G.726-32, G.729A/B, iLBC, GSM Fa

videoconferencingsupply.com

video conferencing supply sells video conferencing equipment including systems, software, and video phones from brands including polycom, lifesize, and cisco.

metrolinedirect.com

The Plantronics (Poly) Savi 7210 Office is a DECT wireless headset system for use in office and call center environments with a desk phone. It features 12 hours of talk time, up to a 400 foot range, wideband audio, hearing protection, and secure DECT wireless communications.