The GRWIC-D-ES-2S-8PC is a Cisco Gigabit Router WAN Interface Card, designed for use with Cisco Integrated Services Routers (ISRs). It provides 2 serial ports and 8 port channelized E1 ports, offering a mix of serial and E1 connectivity. This card is intended for WAN connections, supporting various protocols and services. The “D” in the model name indicates a double-wide card. It is used to connect to legacy telecom equipment.
