Private Zone Configuration - Avaya Nortel Communication Server 1000 Manual

178 Features
The feature key labels for each IP Phones are stored in the Call Server
database. When the Call Server performs an EDD, the feature key labels
are saved to the database. The feature key label information is retrieved
from the file into memory during the sysload of the Call Server. When the
system performs an INI or sysload, feature key label changes performed by
users between the last EDD and the INI or sysload are lost.
When the IP Phone registers with the Call Server, the Call Server looks
up the feature key label in the memory, based on the TN of the IP Phone.
If the labels are found, they are sent to the IP Phone when the key map
download occurs. If the labels are not found, the Call Server sends out the
key number strings or key functions.
For more information about self-labeled line/programmable feature keys,
see IP Phones Fundamentals (NN43001-368).
Private Zone configuration
Private Zones are available for the CS 1000 systems.
Lack of DSP resources
DSP resources for each customer are placed in one common pool. A DSP
channel is allocated to an IP-to-circuit-switched call based on a round-robin
searching algorithm within the pool.
If an available resource cannot be found, the overflow tone is given. For
most installations, this approach works because all IP Phone users share
the IP Line DSP resources. The DSP can be provisioned using a DSP-to-IP
Phone ratio similar to trunk resources, because the DSP are used only for
circuit-switched access or conference calls.
When IP-to-PSTN calls are used, such as with ACD agents or other users
who consistently are using trunk resources when making calls, it becomes
difficult to provision the system in a way that guarantees an available DSP
channel when these users need it. If the other users suddenly make a lot
of conference calls or trunk calls, the DSP resources can deplete and as
a result, calls cannot be made. This occurs because all DSP channels
are in one pool.
DSP resources and Private Zones
IP Line provides the Private Zone Configuration feature for DSP
configuration and allocation to the zone configuration. This feature enables
the configuration of one or more gateway channels as a private resource.
This guarantees DSP availability for critical or ACD agent IP Phone.
A zone can be configured as shared or private.
Copyright © 2003–2008, Nortel Networks
.
Nortel Communication Server 1000
IP Line Fundamentals
NN43100-500 02.02 Standard
Release 5.5 4 February 2008