Quick tech specs
- Voice / fax module
- for Cisco 28XX
- 28XX 4-pair
- 29XX
- 38XX V3PN
- analog ports: 2
- 28XX 2-pair
- 28XX V3PN
- 38XX
- 39XX; IAD 2430
Know your gear
The FXS (foreign exchange station) port is used to connect directly to phones, fax machines, and key systems. Generates battery polarity reversal and caller ID.
The DID (direct inward dial) port is used to provide off-premises DID connection from central office.
The DID (direct inward dial) port is used to provide off-premises DID connection from central office.