Leitner Corded Compat Settings

Leitner headset + an Easy Connect cord would only have compatibility switches in the headset part

Leitner headset with a Leitner Avaya cord or a USB cord you will have TWO compatibility switches (headset & qd cord)

Common known compats (If these compats do not work, encourage a quick experiment until you find the right ones)

Computer: 2 & 3 (Older QD cord also had their own set of compat switches [which should also be set at 2 & 3], but the newer ones DO NOT)

Aastra: 2 & 3

Alcatel: 2 & 3

Avaya: Headset - Unknown, QD Cord - 6 or 7

Cisco: 2 & 4 or 1 & 4

Cortelco: 2 & 4

Mitel: 1 & 3 or 2 & 3

NEC: 2 & 3

Nortel: 2 & 3

Panasonic: 2 & 3 or 2 & 4

Polycom: 2 & 3 or 2 & 4

Shoretel: 2 & 3

Yealink: 1 & 4 or 2 & 4

Zultys: 2 & 3

Grandstream: 2 & 4

All cordless phones: 2 & 3