Telek Kode is a small little sandy bay near Bangsal and Pemenang Town in Lombok. It's really just a point of departure and stopover on journeys to the Gili Islands, Bali, or the more touristy locations of Lombok like Senggigi. Boats on their way to the Gilis will stop here mostly because there is a clearance requirement for passengers by the local government. Once the standard paperwork is done, you are soon on your way.
If Teluk Kode is your departure point and you are getting there by taxi, be careful that your taxi doesn't take you to Bangsal, which is 1km nearby - that's the wrong place, and can be quite unpleasant with cowboy hawker hassle. Teluk Kode is much better than busy, crazy Bangsal! From Senggigi, a metered taxi to Telek Kode will cost around 70,000Rp.