Reasons A Company Might Want Vlans; Voice / Tone Signaling - Toshiba IP edge General Description Manual

Features

Voice / Tone Signaling

tual LAN (for example, a VoIP LAN) even though the devices are plugged into the same
physical network.
VLAN for the IP Telephone (IPT) and data port may be programmed manually using the
base station or remotely via Enterprise Manager. There are no settings to set on the IPedge
server, however, ensure that the data switch port connected to the IPedge server is config-
ured to be in the same VLAN ID as the IPTs. For IPT configuration, broadcast mode is not
recommended for large deployments (100+ phones).
With or without VLANs, 802.1p and Diffserv protocols may be used to provide Quality of
Service for voice by allowing voice packets to be prioritized over data packets.
To provide additional prioritization for voice services, it is possible to enable 802.1p in
conjunction with 802.1Q (VLANs). This is currently a system wide setting in IPedge.
However, this will enable 802.1p on remote phones requiring the switches are all locations
where remote phones are deployed to support 802.1p.
When using 802.1Q or 802.1p it is important to ensure that all the network of the ethernet
Note
switches and routers are capable of supporting one or both protocols.

Reasons a company might want VLANs

• Security – Separating systems that have sensitive data from the rest of the network decreases
the chances that people will gain access to information they are not authorized to see.
• Projects/Special Applications – Managing a project or working with a specialized application
may be simplified by using a VLAN that brings all the required nodes together.
• Performance/Bandwidth – Careful monitoring of network use enables the network
administrator to create VLANs that reduce the number of router hops and increase the apparent
bandwidth for network users.
• Access Lists – Provides the network administrator with a way to control who sees the different
types of network traffic. An access list is a table the network administrator creates that lists
which addresses have access to that network.
• Broadcasts/Traffic flow – Since a principle element of a VLAN is the fact that it does not pass
broadcast traffic to nodes that are not part of the VLAN, it automatically reduces broadcast
traffic.
Voice / Tone Signaling
Each DN button can be programmed for either Voice or Tone Signaling as the standard
method of internal incoming call signaling. Tone Signaling rings the telephone when a call
comes in and ensures better privacy. With Tone Signaling, the called telephone receives a
one-second ring tone every three seconds. There are programming settings to adjust/mod-
ify the ringing of both internal and external ringing. 10 possible settings for intercom
external ring signals can be assigned to a PDN.
With Voice Signaling, station users will hear a tone burst followed by the caller's voice
over their telephone speaker when called by another station user locally or over the private
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