Avaya 1110 Fundamentals page 299

Installation and configuration
Figure 60: Avaya 1165E IP Deskphone connections
4. Install the handset. Connect the end of the handset cable with the short straight
section into the handset. Connect the end of the handset cable with the long straight
section to the back of the phone, using the RJ-9 handset jack. Form a small bend
in the cable, and then thread the handset cord through the channels in the stand so
that it exits behind the handset on the right side, in the channel exit in the stand
base marked with the handset symbol. See Figure 61: Cable routing tracks on
page 300.
IP Deskphones Fundamentals February 2013 299