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MERLIN LEGENDCommunications System Release 6.1
System Planning
555-661-112
Issue 1
August 1998
Lines/Trunks
Page 3-45Selecting Line/Trunk Options
3
MLH service may be configured in either a linear or circular pattern. Current
testing of the MERLIN LEGEND system with the CO switches supports linear
hunting on a Lucent Technologies 5ESS switch, and circular hunting on the
Northern Telecom DMS-100 and Siemens SSC EWSD switches. Other
configurations are possible, but they are not guaranteed to work with the MERLIN
LEGEND system.
The Service Profile consists of the following:
■ A Service Profile Identifier (SPID), which is a unique identifier used by the
CO to associate an ISDN terminal with a Service Profile.
■ A Directory Number (DN) for each BRI line B-channel. This DN is usually
the local phone number that was assigned by the service provider.
■ If MLH service
is not
subscribed, only one call to a particular DN will be
accepted at any given time, and any station with the line appearance of the
BRI line will alert. If MLH
is
subscribed, the CO will automatically hunt for
the next available B-channel within the hunt group and deliver multiple calls
to the same DN. If all B-channels are in use, subsequent calls to the same
DN will receive standard CO treatment (such as busy tone).
■ Optional features:
— Calling Party Number/Billing Number (CPN/BN) can also be ordered
at subscription time.
The local telephone company normally provides two SPIDs and DNs for each BRI
line (also called a Digital Subscriber Line [DSL]) ordered. The SPID consists of a
string of digits 0 through 9 not more than 20 digits in length. The DN consists of a
string of digits 0 through 9 not more than 10 digits in length. Each DSL will use two
lines on Form 3i, Incoming Trunks: BRI Options (800 NI-BRI Module).
Planning Form Instructions 3
1. Transfer the following information from 2c, System Numbering: Trunk
Jacks, to Form 3i, Incoming Trunks: BRI Options (800 NI-BRI Module):
■ Write the logical ID in the “Logical ID” column. Skip a line between
each entry.
■ Write the line number in the “Line Number” column.
NOTE:
Refer to the information provided by the local telephone company to
enter the information below.
2. Write the two DNs for each BRI line in the “Directory Number” column.
3. Write the two SPIDs assigned to each BRI line in the “Service Profile
Identifier” column.