Along with increased trade and the development of townships, the number of telephone subscribers in Peninsular Malaysia increased significantly. By 1930, to deal with the volume of telephony traffic, an automated magneto exchange was commissioned in Kuala Lumpur on Jalan Weld. In the 1930s, all telephone exchanges in the Malayan Trunk System could communicate with exchanges in Java, the Philippines, the US, Canada and Mexico using shortwave radio-telephone transmitters. Towards the end of the decade, a Marconi Radio Terminal was installed at the Kuala Lumpur Telephone Exchange to handle overseas calls.