Cisco voice / fax module

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Product Description Cisco - voice / fax module
Device Type Voice / fax module - EVM
Form Factor Internal
Digital Signaling Protocol H.323, MGCP, SIP
Voice Communication Support VoIP, VoATM, VoFR
Analog Ports Qty 8
System Requirements Cisco IOS 12.3(8)T4 or later
Designed For Cisco 2821, 2821 4-pair, 2821 V3PN, 2851, 2851 V3PN, 2911, 2921, 2951, 3825, 3825 V3PN, 3845, 3845 V3PN, 3925, 3925E, 3945