CISCO EM-HDA-3FXS/4FXO 3-port FXS & 4-port FXO Voice and Fax Expansion Module

CISCO NIM-2FXS/4FXO 2-Port FXS 4-Port FXO ISR Router Voice Fax Interface Module

Cisco VIC2-4FXO 4-Port FXO Voice/Fax Interface Card

Cisco EM-HDA-6FXO 6-Port Voice and Fax Expansion Module

Cisco VIC2-4FXO 4-port FXO Voice/fax Interface Card

CISCO NIM-4FXO 4-port Network Interface Module VOICE FXO ISR4000 Series Routers

CISCO VIC2-2FXO 2-Port Foreign Exchange Office Voice/Fax Interface Card Module

Cisco NIM-2FXS/4FXO 2-Port FXS 4-Port FXO ISR Router Voice Fax Interface Module