MANUAL SIGNALLINGUse this feature when you want to send a brief 500ms ring burst to another sta-tion, regardless of the status of your phone (on-hook, off-hook, handsfree, DND, orringing).To send a signal to another station:• Press the Manual Signalling (MS) button.• You may press the MS button repeatedly to send multiple signals to the des-ignated station.NOTE: Your phone must have a Manual Signalling (MS) button with a stationnumber extender assigned to it.OFF-HOOK VOICE ANNOUNCEKeysets may receive a voice announcement while on another call. The calling sta-tion must have an OHVA button. When you are in DND, you cannot receive OHVAcalls. The OHVA feature will work with intercom and transferred calls.When you receive an OHVA and secure OHVA is ON, you will hear the announce-ment in the handset receiver, if you are using the handset. If secure OHVA is OFFthen you will hear the announcement on the speaker, if you are talking on thehandset. If you are using the speakerphone the announcement will always beheard through the speaker.To make an off-hook voice announcement:• Dial the extension number or press the DSS button.• When you receive a busy signal, press the OHVA button.• After the attention tone, begin speaking.• Finish the call by replacing the handset.• Press the flashing CALL button on your keyset. This will place the originalparty on hold and allow you to talk to the announcing party.• To return to your first party, press the button corresponding to your originalcall. This will disconnect the OHVA call.NOTES:1. When you are voice announcing to a station close to you, use the handset toavoid an echo effect.2. You cannot off-hook voice announce to single line telephones.41