The PCM120 equipment can multiplexes 120 channels into 4-16 E1 data, and cross- connect all of the time slots through the network management software. The 120 channels of voice can cross-connect to any E1.
All the units cards could be of any interface cards, such as, S interface card, O interface card, 2/4 EM interface card, asynchronous data interface card, synchronous data interface card, carrier magnet interface card, Ethernet interface card, and so on.
There are interface cards of 3 capacities for choice: 15 channels/card, 10 channels/card, 5 channels/card, 4 channels/card, 3 channels/card.
Please note that you should contact the supplier directly about payment, packaging, shipping and delivery details.