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Network Modules for Cisco 2600, 3600, and 3700 Series
141
Cisco Voice Network Modules
One-slot IP Communications
Voice/Fax Network Module
Provides a one-slot
voice/fax network module
with an integrated digital
signal processor (DSP),
enabling voice and fax
trafc to be routed over
data networks The user-
congurable expansion slot
accommodates a Cisco
voice interface card, which
allows four analog ports or
two BRI ports to standard
telephony equipment such
as PBXs, key systems,
phones, and fax machines
Voice and Fax Integration
3800 Series–123(11)T
2811, 2821, and 2851–
123(8)T4
Requires voice interface
card and voice feature set
Two-slot IP Communications
Voice/Fax Network Module
Provides a two-slot
voice/fax network module
with an integrated digital
signal processor (DSP),
enabling voice and fax
trafc to be routed over
data networks The user-
congurable expansion
slot accommodates two
Cisco voice interface
cards, which allows up
to eight analog ports or
four BRI ports to standard
telephony equipment such
as PBXs, key systems,
phones, and fax machines
Voice and Fax Integration
3800 Series–123(11)T
2811, 2821, and 2851–
123(8)T4
Requires voice interface
card and voice feature set