Which Jabra cord do you recommend using with the Avaya 1600 and 9600 series telephones?

We recommend using the Jabra GN1216 Avaya cord (Jabra product number 88001-03 or 88001-04) as part of the corded solution with Avaya 1600, 9600, J169, and J179 series telephones. Note that the Jabra GN1216 Avaya cord must be connected to Avaya telephones using the headset port, and cannot be used with telephones that do not have a headset port.