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Remote IP Feature Phone Installation Manual
Network guidelines
The following pages outline the minimum cable, LAN and WAN infrastructure needed for the Remote
IP Feature Phone to work correctly. If the infrastructure doesn't meet these minimums, the system may
not operate reliably. These guidelines also apply to the main office for proper operation of the IP PBX.
LAN
Cabling
• Use Category 5 or better cable that is pinned out to the 568B standard set forth by ANSI/EIA.
• Check with the customer about whether the cable installation is certified to meet the Cat-5 standard.
If in doubt please use a cable-certifying tool to certify the cable.
Network architecture
Insure that the network architecture is up to par.
• Shared network
– Overall network utilization should be under 30% under normal-working-hour conditions.
– Insure that no hubs are cascaded more than two levels deep and that no loops have inadvertently
been introduced in the hubs on the network.
– Check for excessive collisions or any other network errors. If any errors are found, they will need
to be corrected to ensure proper operation of the IP PBX and Remote Phone. (Usually, high
collision rates and other network errors are due to a faulty network interface card.)
• Switched network
– Check to see if the customer is using any kind of VLAN. If so, meet with the network administrator
to make sure that you understand the VLAN architecture and can engineer the IP system to work
with it.
– Utilization of the busiest network segment should be under 30% under normal-working-hour conditions.
• Impact from other hosts on the network
– Only necessary protocols should be present on the hosts attached to the network. For example, if the
clients aren't running any IPX applications, then IPX shouldn't be installed on any workstations.
– Check to make sure that no unnecessary TSR programs are running on the network hosts.
These programs can sometimes cause broadcast storms and other kinds of unnecessary traffic
on the network.
– Make sure sufficient address space is available if the customer wants the Remote Phones in the
same subnet as the other network hosts.
1
American National Standards Institute/Electronic Industries Association.
Network guidelines
1
F.1
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