Specifications

Features
VLAN Tagging
Strata CIX General Description 08/14 187
VLAN Tagging
System Availability: All systems
The MIPU / LIPU / LIPS and GIPU / GIPH and IP5000-series/IPT2000-series phones support
802.1Q Virtual Local Area Network (VLAN) technologies. For sites with LANs that have 1000’s
of IP devices, VLANs can be used to separate the network virtually rather than physically, to
prevent the broadcast and other traffic from one virtual LAN (typically a data lan) from impairing
the performance of equipment on another virtual LAN (for example a VoIP LAN) even though the
devices are plugged into the same physical network. VLAN for the IPT phone and the phone’s
data port can each be programmed manually in the phone, or remotely through eManager. And
within or without VLANs, 802.1P and Diffserv can be used to provide Quality of Service for voice
by allowing voice packets to be prioritized over data packets. Note that when using 802.1Q or
802.1P it is important to ensure that all the network of the ethernet switches and routers are
capable of supporting this.
Reasons why 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
can 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 or Tone Signaling
System Availability: All systems
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. The pitch and sound of internal tone signaling is always the same. Incoming
CO line ringing is uniquely different, with up to four optional ring tone sounds.
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 network. Voice
Signaling allows handsfree talkback from the called telephone on internal and private network Tie
line calls.
After calling a directory number that has Voice Signaling, the caller can switch to Tone Signaling
by dialing
1. The signaling method can also be switched from Tone to Voice Signaling by dialing
2. Whether a call is initiated with Tone or Voice Signaling, it can always be switched back and
forth by dialing
1 or 2.
Note A call to a Voice Signaling [DN] will not Call Forward No Answer unless the signaling is
switched from Voice to Tone Signaling.