User's Manual

Chapter 10 Voice
P-2612HW Series User’s Guide
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1 Pick up the phone and press “****” on your phone’s keypad and wait for the
message that says you are in the configuration menu.
2 Press a number from 1201~1208 followed by the “#” key to listen to the tone.
3 You can continue to add, listen to, or delete tones, or you can hang up the receiver
when you are done.
Deleting Custom Tones
Do the following to delete a custom tone:
1 Pick up the phone and press “****” on your phone’s keypad and wait for the
message that says you are in the configuration menu.
2 Press a number from 1301~1308 followed by the “#” key to delete the tone of
your choice. Press 14 followed by the “#” key if you wish to clear all your custom
tones.
You can continue to add, listen to, or delete tones, or you can hang up the receiver
when you are done.
10.13.3 Quality of Service (QoS)
Quality of Service (QoS) refers to both a network's ability to deliver data with
minimum delay, and the networking methods used to provide bandwidth for real-
time multimedia applications.
Type of Service (ToS)
Network traffic can be classified by setting the ToS (Type of Service) values at the
data source (for example, at the ZyXEL Device) so a server can decide the best
method of delivery, that is the least cost, fastest route and so on.
DiffServ
DiffServ is a class of service (CoS) model that marks packets so that they receive
specific per-hop treatment at DiffServ-compliant network devices along the route
based on the application types and traffic flow. Packets are marked with DiffServ
Code Points (DSCP) indicating the level of service desired. This allows the
intermediary DiffServ-compliant network devices to handle the packets differently
depending on the code points without the need to negotiate paths or remember
state information for every flow. In addition, applications do not have to request a
particular service or give advanced notice of where the traffic is going.
4
4. The ZyXEL Device does not support DiffServ at the time of writing.