Quick tech specs
- Speed
- RS-232/449/530/V.35/X.21 x 4
- Expansion module
- for Cisco 28XX, 28XX 2-pair, 28XX 4-pair, 28XX V3PN, 29XX, 38XX, 38XX V3PN, 39XX
Know your gear
The HWIC-4T is a 4-port multiprotocol high-speed WAN interface card (HWIC). Protocols supported are Async (SLIP), Async (PPP), HDLC, Bisync, and transparent.