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MERLIN LEGENDCommunications System Release 6.1
System Planning
555-661-112
Issue 1
August 1998
Before You Begin
Page 1-10Obtaining Telephone Company Information
1
Obtaining Telephone Company
Information 1
To fill out many of the forms, especially forms involving incoming lines/trunks, you
need to obtain information from the local telephone company. Before you speak
with the local telephone company, make sure you understand your customer’s
company requirements regarding the communications system. Some of the
information you will need to know includes:
■ Which incoming line/trunk connects to each channel on each 100D
module, and the order in which the lines/trunks are assigned
■ The Service Profile Identifier (SPID) and Directory Number (DN)
associated with each channel on each 800 NI-BRI module
■ Whether the disconnect signals for loop-start lines/trunks are reliable or
unreliable, and the length of the Hold disconnect interval
Information the local telephone company can provide includes:
■ Detailed T1 parameters
■ Detailed NI-1 BRI parameters
■ The number of digits sent on DID trunks
■ Which lines/trunks, if any, require a toll-call prefix
■ The telephone number for each incoming line/trunk
■ The type(s) of incoming lines/trunks (loop-start, ground-start, and so on)
■ Which lines/trunks, if any, are rotary-dial lines/trunks