Zultys ZIP4x4, User Manual

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ZIP4x4 User’s Manual
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100 memory phone book plus 64 location memory for last numbers received or dialled
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based on highly stable Linux operating system
1.2.1 Switch Functionality
The phone uses an Ethernet switch (not a hub) to connect the three accessory ports and the phone
itself to the LAN. Therefore, the ZIP4x4 can control the QoS to ensure that voice packets always
have priority. Further, when the phone is not in use, the ZIP4x4 supports wire speed switching
between the LAN (network) and the accessory ports. A conceptual picture of the switch is shown
in figure 1-3.
You can put the phone and the accessory ports on different VLANs (802.1q – see section 9.6.4 on
page 139 for details).
The inclusion of the switch inside the phone allows you to take a single Ethernet circuit from the
wiring closet to the desktop. If you are connecting multiple users and not computers, you can use
this internal switch to make connections to other phones. You can connect phones two layers
deep with this arrangement to minimize the number of switch ports required in the wiring closet.
1.2.2 Display Description
The display is a graphical LCD, 160 dots by 32 dots. It is used mostly to display characters, 20
columns by 3 rows. You can tilt the display so that it is facing you. Pull the back of the display unit
and swing it up and towards the front of the phone, as shown in figure 1-4.
You can adjust the contrast of the display as described in section 9.5.1 on page 120.
Figure 1-3 Internal Representation of the Managed Switch