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The VOIM can be installed on the basic KSU and provides the Ethernet interface for S/W applications and VoIP features with a basic VoIP board(VOIB) that provides 4 VoIP channels.

The VOIM has the capacity of maximum 8 channels with one optional daughter board(VOIU) that provides 4 VoIP channels.

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LAN Interface

10 / 100 Base-T Ethernet (IEEE 802.3)

Speed

10 Mbps or 100 Mbps (Auto-Negotiation)

Duplex

Half Duplex or Full Duplex (Auto-Negotiation)

VOIP Protocol

H.323 Revision 3

Voice Compression

G.711/G.726/G729/G.723.1

Voice/Fax Switching

T.38

Echo cancellation

G.165