This adapter allows the following telephone accessories to be connected:
– Active loudspeaker
– Desk microphone connected via a Y cable
– Corded headset (121 TR9-5) or
– Cordless headset (121 TR 9-5) with the call acceptance/end call function of a mobile unit

Applicability

– SIP phones:
– optiPoint 410 standard S
– optiPoint 420 standard S
– optiPoint 410 advance S
– optiPoint 420 advance S
– CorNet IP phones:
– optiPoint 410 standard
– optiPoint 420 standard
– optiPoint 410 advance
– optiPoint 420 advance