Punjab Communications Ltd. Supplies Access Network Switching Equipment. Punjab Communications Ltd. Is an ISO 9001:2008 accredited company. Punjab Communications Ltd. Manufactures telecom and IT equipment. Access Network Switching Equipment is an effective communication solution for rural areas. Access Network Switching Equipment provides immediate telephone connections with minimal infrastructure and can be easily integrated to existing network through man-machine interface. These are available with capacities starting from 256 lines to 40,000 lines which are manufactured meeting requirements of any integrated digital network.