Polycom H340 - Manual (Page 15)

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Deploying SpectraLink e340, h340 and i640 Wireless Telephones BEST PRACTICES GUIDE
October 2010
3 Network Infrastructure Considerations
3.1 Physical Connections
SpectraLink infrastructure components, including the SVP Server(s), Telephony Gateways and OAI Gateway, must
connect to a facility’s LAN using enterprise-grade Ethernet switches rather than Ethernet hubs or consumer-grade
SOHO switches in order to provide adequate bandwidth and limit traffic collisions and bottlenecks (see Figure 4 for
reference).
Ethernet switches should be configured to statically set the speed and duplex values as appropriate for the device
being connected to that port. The SVP Server should be set to the 100Base-T/Full Full-duplex transmission setting.
This is required to support the maximum simultaneous voice calls and for optimal system performance. The
SpectraLink Telephony Gateway and OAI Gateway products utilize a 10Base-T, half-duplex Ethernet interface and the
Ethernet switch ports should be set accordingly.
Network wiring is an important component of any Ethernet-based system and is subject to local and state building code
specifications. Cat 5 or better, 4-pair 10/100 Base-T Ethernet cabling must be used for SpectraLink infrastructure
equipment.
Wireless bridges are sometimes used to interconnect geographically isolated Ethernet LANs or to extend the range
of existing WLANs. Such devices create bottlenecks for network capacity and add delay to the overall network, which
are generally not tolerable for real-time voice connections. Polycom does not support a configuration that includes
wireless bridges and does not recommend using wireless bridges with any wireless network supporting voice.
Figure 4 – Physical Connections