In order to achieve true "hold button" activation, we created a small module called a TEHMA (telephone extension hold music activator). This line-powered activator sends a signal down the phone line telling the OHP-4500 unit whether or not the phone is on hold. Only phone extensions with a TEHMA can put a call on hold with the phone's hold button.
Phones without a TEHMA can put a call on hold by pressing the star key twice and then pressing the phone's hold button.
The OHP-4500 ships with 2 TEHMAs. Additonal activators can be ordered from your reseller or from our
on-line store.
If you've been waiting for the right solution for adding the professional sound of on-hold audio to your phones, your wait is almost over!