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SpectraLink Corporation Installation, Configuration, and Administration
NetLink SVP Server (within IP environments)
PN: 72-0178-01-F.doc Page 9
2.7 Notes on System Configuration
In an IP system using subnets to differentiate telephony areas, each subnet
must have its own APs. Each subnet may require an SVP Server to
maintain voice quality, but this depends on traffic volume and router
capacity.
Multiple SVP Server environments are those which have more than one
SVP Server. A master SVP Server must be identified in a multiple-SVP
Server environment.
SVP Server models may not be combined within one subnet. More than
one SVP Server model type may be used within a facility if installed on
different subnets.
Wireless telephones cannot roam with uninterrupted service between
subnets unless specific LAN components are present. Certain
AP/Ethernet switch combinations establish a layer-2 tunnel across subnets
that enables the handsets to roam. Without this capability, any call in
progress will be dropped when the user moves out of range and the
handset must be power cycled in order to resume functionality in the new
subnet area.
Please see
Deploying Enterprise-Grade Wi-Fi Telephony
for detailed
configuration information when installing multiple SVP Server models
across several different subnets.
IP multicast addresses are used when NetLink i640 and 8030 Wireless
Telephones are installed. This requires that multicasting be enabled on the
subnet used for the NetLink Wireless Telephones, SVP Server, and
telephony gateways.
Routers are typically configured with filters to prevent multicast traffic
from flowing outside of specific domains. The wireless LAN can be placed
on a separate VLAN or subnet to reduce the effects of broadcast and
multicast traffic from devices in other network segments.
The NetLink SVP Server requires a Cat. 5 cable connection between its
network port and the Ethernet switch. The NetLink SVP Server auto-
negotiates to the type of port on the Ethernet switch and supports 10Base-
T, 100Base-T, full-duplex and half-duplex port types.