Drop and Insert Multiplexing
The needs of modern businesses have made advances in options that networks provide. Some come in the form of protocols, others in the form of hardware. One of these is drop and insert multiplexing. Drop and insert hardware allows companies to buy a single network module. These modules support data and voice. They include an integrated channel service unit / data service unit (CSU/DSU), and some newer models echo cancellation modules. Voice support can be used only for DS0 or PRI modes. Now with a Voice WAN Interface Card (VWIC), Cisco devices can offer a better value for companies by requiring only a single module to be purchased. When they install the VWICs, they can do both data and voice simultaneously. The VWIC ...
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