Avaya 1110 Fundamentals page 235

Installation and configuration
Figure 41: Avaya 1120E 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. See Figure 42: Cable routing tracks on page 236.
IP Deskphones Fundamentals February 2013 235