Cabinetdistribution over a data network Page181 of 544
Option11C and 11C Mini Technical ReferenceGuide
Basic LAN requirements for Excellent Voice Quality
Summary of requirements:
•100Base-Tx/F Layer 2 switch that supports full duplex connection
(Layer 3 switching is supported). The Data Port on the Campus Data
Network/LAN must have Auto-negotiation disabled and the Speed/
Duplex set to 100 Full Duplex .
•Packet Loss < 0.5%
•Idle System Bandwidth approximately 0 Mbps, Peak Bandwidth under
high traffic conditions 14 Mbps, Theoretical Maximum peak bandwidth
24 Mbps
•Network Delay - Round Trip Delay (RTD) < 5 msec (*)
* with PDV jitter buffer set to maximum, RTD < 5 ms
* with PDV jitter buffer set to minimum, RTD < 12 ms
•Support of Port Priority Queuing recommended
•Support of VLAN configuration recommended
The network must provide full duplex capability between the Main and all IP
Expansion cabinets for excellent voice quality. A Layer 2 or Layer 3 switch
that supports full duplex connection over 100BaseT/F is required to achieve
this minimum network requirement.