Quick tech specs
- Expansion module
- for Cisco 18XX
- 1921 ADSL2+
- 28XX
- 3845 V3PN
- 39XX
- RS-232 x 8
- 1921 4-pair
- 19XX
- 29XX
- 38XX
Know your gear
The 8-port asynchronous HWIC (HWIC-8A) provides 8 asynchronous RS-232 interfaces in DTE format, at data rates of up to 230.4 kbps.