I found a site that sells phone for that sysem and proved what you said. a EKT6025S and EKT6025H look identical, but one is speakerphone and one is handsfree answerback.

Although I opened one of the phones when I was there and saw what looked like a Mic connected.

I emailed the customer to let him know.

Thanks

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<font face="Verdana, Arial" size="2">Originally posted by paul144:
Make sure that the phones are "S" or "SD" models. It sounds to me like you have some "H" models. They still have the button and the light, but they do not have an internal mic. They will only function handsfree on intercom and the transmit quality will be terrible as it uses the handset mic to transmit in handsfree mode. An "H" phone is not a speakerphone and will not function handsfree on outside calls.

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David
Tele Express Business Systems