Hello. I am new to the Mitel world of IP phones. I want to know if there is a model of polycom speaker phone that is compatible with a mitel 5330. I would like to add a better speaker phone (powered) to improve call quality, especially for overseas calls. Can I add a speaker phone to a 5330 via the headset port, or do I have to get an IP based polycom unit?
Any help would be most appreciated. Thanks.