Mitel 5560 IPT none Specifications download pdf (Page 274)

Engineering Guidelines

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However, there are additional issues, unique to wireless LANs, that must be taken into

consideration when designing a wireless LAN. These issues are best addressed by consulting

the appropriate wireless phone documentation.

Detailed information regarding SpectraLink equipment, network engineering guidelines and

numerous discussion papers can be found on the Spectralink web site. The URL is

http://support.spectralink.com/SpectralinkService/support/us/support/voice/index.html.

Additional information can be found on the Mitel On Line Web Site, under "Products and

Services", then under “Applications”, and then finally, "Wireless".

Coverage and capacity

The APs (SpectraLink) and the RFPs (DECT) provide the radio frequency (RF) link to the

wireless telephones, each AP or RFP will have a limitation on the number of wireless telephones

and wireless PCs that the AP/RFP can support due to site-specific issues such as RF coverage

areas, bandwidth limitations, and user expectations.

When designed correctly, the wireless LAN will ensure:

• QoS for wireless phone users

• Fair LAN access for wireless PC users

• Reliability and functionality that meet the customer's needs.

The DECT system supports roaming across subnets. This means that a DECT phone will

maintain a call in progress when the user roams into a new subnet. However, when a user

roams across subnets, the RTP packets are not carried via RF in the WLAN; the packets are

carried across the LAN.

The SpectraLink system does not support roaming across subnets. This means that a

SpectraLink phone will not maintain a call in progress when the user roams into a different

subnet. Once a user has entered a new subnet, that user will need to re-initialize the SpectraLink

phone before a call can be made.

Connectivity to the wired LAN

To ensure adequate bandwidth and to eliminate collisions, connections from SpectraLink/DECT

equipment into the wired LAN should be made with Ethernet switches rather than Ethernet hubs.

Auto-negotiation should be enabled on the Ethernet switch ports so that the Ethernet switch

can take advantage of the highest speed interfaces available on SpectraLink/DECT equipment.

Category-5 cable should be used to make the connection between the Ethernet switch and

SpectraLink/DECT equipment.

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Mitel 5560 IPT none Specifications Page 274