The PPC-1 (PIPE Pacific Cable 1) submarine cable system consists of two segments of digital fiber-optic cable:

(1) the Australia-Guam Trunk, connecting Sydney, Australia with Piti, Guam; and

(2) the PNG Spur, connecting Madang, Papua New Guinea with a branching unit located on the Australia-Guam Trunk. 

The Australia-Guam Trunk of the PPC-1 cable system consists of two optical fiber pairs, with a design capacity of 96 wavelengths (10 Gbps) on each fiber pair, for a total design capacity of 1.92 Tbps. The initial configuration of the Australia-Guam Trunk provides a total of 140 Gbps of capacity. The initial configuration of the PNG Spur provides a total of 20 Gbps of capacity, 10 Gbps on the Papua New Guinea-Guam route and 10 Gbps on the Papua New Guinea-Australia route.

The PPC-1 cable project was lunched on January 14, 2008. On September 22, 2009, Internode released a press release claiming successful transmission of IP packets across the PPC-1 cable, making it the first commercial entity to make use of the PPC-1 cable. The PPC-1 cable project was formally completed on October 8, 2009.

The PPC-1 cable system is privately owned and operated by Pipe Networks, supplied by Tyco (now SubCom).

PIPE Networks began life as IX Services Australia Pty Ltd in 2001, and formally commenced operations in 2002.

In 2010, TPG Telecom acquired PIPE Networks for $373.09 million.

In 2024, Vocus acquired TPG Telecom's Enterprise, Government and Wholesale (EG&W) fixed business and fibre network assets for A$5.25 billion ($3.54 billion), including the PPC-1 cable system.