Mitel Inter-Tel 5000, Installation And Maintenance Manual

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Appendix A: Inter-Tel Private Networking
Planning the Network
Page A-4
Inter-Tel
®
5000 Installation Manual – Issue 2.4, May 2008
Planning the Network
The most important step in setting up a network is planning. Without careful planning, the
network will be difficult to program and maintain. If necessary, see
Network IP Topology for
information on network topology, including firewalls and NAT.
Gather Information
As you read through this section, fill out the planning sheet on page A-29 as you answer these
questions:
•
How many systems (nodes) are in the network? How will they be numbered?
•
Where are they located?
•
What additional hardware will you need?
•
(For PRI connections) What additional services need to be ordered? Does the local
telephone company offer point-to-point clear channel connections to the areas for the
desired nodes? Does the customer have existing cable/fiber/microwave, etc., connections
that can be used? In many cases, the network connection can simply be a customer-
provided cable. The maximum length of the customer-provided network cable should not
exceed 6000 ft (1800 m). If more than 6000 ft (1800 m) of cable is required, some type of
amplification, such as a repeater, is required.
•
Does the customer already have a data network? It is very possible the customer already
has an existing data network. Is it possible to use bandwidth from the existing data
network for voice? Does the customer want to combine voice and data on the network?
What type of drop and insert devices will be included in the network plan?
•
How will the network be configured? How will the trunks connect to the network? Will all
the trunks connect to one node or will the trunks be distributed?
•
Call patterns for each node should be determined to configure the appropriate amount of
channels necessary for the network connections. Remember to include incoming/outgoing
intercom, incoming/outgoing central office, automated attendant, operator, voice mail, hunt
group announcement and overflow messages, and Record-A-Call traffic in your
calculations.
•
What is the numbering plan for the extensions, Voice Processing applications, feature
codes, hunt groups, node trunk groups, etc.? Remember to leave room for expansion in
your numbering plan.
•
Does each node have a local trunk group for emergency calls?
•
Which system in the network will have the external voice processing system?
•
How will calls ring in to the external voice processing system? EM or Voice Processing
Unit? Will they be routed to other nodes?
•
Will call routing tables and/or ARS route calls to other nodes?
•
Which endpoint(s) will be the network-wide primary attendant(s)? Which endpoints are the
node attendants?
•
Will SMDR include all network calls? Where will the output port(s) be located? SMDR
must be buffered using the VPU.
•
Where will the message print be located?
•
Where will fax machines, modems, and external paging be located?
•
Will there be T.38 IP faxing between Inter-Tel CS-5200/5400/5600 systems. IP faxing
consumes two IP resources per fax.
NOTE For PRI connections, the System requires T1 channel 24 in any network span.