Avaya 4690 & 1692 IP Expansion Microphones - High-Quality Business VoIP Conference Phones for Office Communication & Call Centers

Polycom SoundStation IP 7000 Extension Microphones (2200-40040-001) - High-Quality Conference Phone Accessories for Clear Audio in Office Meetings & Remote Work

Expandable 48-Mic Plug & Play Wireless/Wired Conference System - Digital Conference Solution for Meetings, Seminars & Events

AVAYA B100 Series Expansion Microphones 1PR for Conference Phone - AVAYA 700501539 - Premium Audio for Business Meetings & Conference Calls

Vtech VCS754 ErisStation Conference Phone with 4 Wireless Microphones - VoIP Compatible Business Speakerphone for Office Meetings & Remote Work