
52 Engineering guidelines
Enterprise Edge 2.0 IP Telephony Configuration Guide P0911590 Issue 02
Program Remote Packages so that the IP trunks in Pool A can access the lines in
Pool PRI-A in a toll bypass plan. A Remote Package is a set of capabilities
associated with an incoming trunk. The default package is fully restricted, so to
change the restrictions, configure a new Remote Package for each trunk. For
example, you give package 01 access to pool PRI-A and you assign package 01 to
all IP trunks. For more information, see the Enterprise Edge Programming
Operations Guide.
Core telephony services configuration
IP telephony ports represent private IP trunking facilities by the core telephony
services.
The core telephony services require configuration to enable calls to use IP
telephony ports as IP trunks. The user indicates the required destination by dialing
digits. The dialing plan determines the digits required to reach each destination.
The user dials a destination code configured to select a fixed route which in turn,
selects a line pool. A line pool is a group of trunk facilities. This configuration
process allows the administrator to determine the use of facilities. IP trunks are one
of many possible facilities that used to optimize communication functionality.
With this information, Direct Inward Dial (DID) and Direct Outward Dial (DOD)
services are provided.
IP trunks are a point-to-multipoint facility, different from analog TIE trunks, which
are a point-to-point facility. When IP trunk is selected through the dialed digits, its
endpoint is not determined. The remote gateway configuration on IP telephony
provides the final address resolution. To ensure functionality, the installer and
administrator need to ensure that the core telephony services configuration, such as
planning the destination codes with the IP telephony remote gateway configuration.
If the leading dialed digits which are passed to the IP gateway during call setup do
not match the IP telephony remote gateway configuration, the call fails.
The installer and administrator need to understand the core telephony services. See
the Enterprise Edge Programming Operations Guide for more information.
See the Configuration chapter on page 61 for more information about core
telephony services set up and configuring the remote gateway.
Post-installation network measurements
The design process is continuous, even after implementation of the IP telephony
and commissioning of voice services over the network. Network changes – in real
IP telephony traffic, general intranet traffic patterns, network controls, network
topology, user needs and networking technology – can make a design no longer
valid or non-compliant with QoS objectives. Review designs against prevailing and
trended network conditions and traffic patterns, every two to three weeks at the
start, and after, four times a year.
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