3Com 3C10111C - NBX 100 - Modular Exp Base, Руководство по установке, Страница: 58 / 210

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How Many
Telephones or
Devices Does the NBX
System Support?
The NBX 100 system accommodates 200 devices. The SuperStack 3 NBX
system can support 1500 devices.
The following items are defined as devices in the NBX system:
■
Each 3Com telephone
■
Each Single-port Analog Terminal Adapter (ATA)
■
Each port on an Analog Terminal Card
■
Each Attendant Console
■
Each T1 or E1 channel
■
Each B channel (if you are using ISDN BRI)
■
Each Line Card port
■
Each instance (installation) of the pcXset ™ Soft Telephone application
■
Each ConneXtions H.323 port
Examples:
■
With 300 3Com telephones, a SuperStack 3 NBX system can
accommodate up to 1200 additional devices, in any combination of
card ports, Attendant Console, T1 channels, and so on.
■
With 124 telephones, an NBX 100 system can have no more than 76
additional devices.
For detailed information on device limits, see “System Configuration
Guidelines” on page 47 .
What Effect Does an
NBX System Have on
a LAN?
A 10 Mbps Ethernet LAN can support a fully configured, fully utilized
NBX 100 system. A 100 Mbps Ethernet LAN can support a fully
configured, fully utilized NBX SuperStack 3 system. That is, a 10 Mbps
Ethernet LAN with 200 “voice devices” (3Com telephones and outside
telephone lines) can support the toll-quality audio provided by the
NBX 100 system even when all 200 devices are in use. Similarly, a
100 Mpbs LAN can support toll-quality audio with a fully configured
SuperStack 3 NBX system. If you use an Ethernet switch, verify that it
supports the 802.1P and 802.1Q specifications.