Instruction manual

MERLIN LEGEND Communications System Release 5.0
System Planning
555-650-112
Issue 1
June 1997
Lines/Trunks
Page 3-40Selecting Line/Trunk Options
3
■ Clock Synchronization for the system
■ Timers for each BRI module (system provides defaults)
The following affect the operation of the MERLIN LEGEND system, however they
are administered on the Central Office (CO) switch:
■ Service Configuration of the BRI lines (IOC “S”, Multi-Line Hunt)
■ Hunting pattern for a Multi-Line Hunt configuration
Service Profile 3
A Service Profile (SP) defines the interface on a BRI line between a CO and an
ISDN terminal. It specifies the parameters and their values necessary to provide
services to the terminal. There are standardized capability packages called ISDN
Ordering Codes (IOCs) that are configured on the CO at subscription time. The
IOC contains information necessary for the CO to provide service to the system.
The MERLIN LEGEND system supports the IOC “S” capability package, which
provides alternate voice/circuit-switched data on two B-channels with no packet
data capability or supplementary voice features, except for the Calling Party
Number/Billing Number (CPN/BN) feature if available.
In addition to the IOC “S” capability package, the MERLIN LEGEND system
supports Multi-Line Hunt (MLH) service for
alternate voice and data hunting if the
CO is an AT&T 5ESS or Northern Telecom DMS-100 switch. For a Siemens SSC
EWSD switch, MLH service must be provisioned as
either voice or data hunting.
MLH service is provided through the
Multi-Line Hunt Group (MLHG) feature on
Northern Telecom DMS-100 switches, and through the
Series Completion feature
on the AT&T 5ESS and Siemens SSC EWSD switches.
NOTE:NOTE:NOTE:
The MLHG feature on the AT&T 5ESS and Siemens SSC EWSD switches
is not recommended for use with the MERLIN LEGEND system.
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 an AT&T 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.