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MERLIN LEGENDCommunications System Release 6.1
System Planning
555-661-112
Issue 1
August 1998
Control Unit Configuration
Page 2-16Numbering the System
2
Planning Form Instructions 2
Refer to the completed Control Unit Diagram (Form 1) and Table 2–1 above to
mark the extension jack types on Form 2a:
1. For each extension module noted in the Control Unit Diagram (beginning
with Slot 01), write in the type of module in the Mod. Type column of
Form 2a and, after the appropriate logical ID (Log. ID) number, draw a line
to indicate the end of that module.
For example, if the first module in the control unit is an 008 MLX module
that has eight jacks, write 008 MLX in the Mod. Type column and draw a
line after Logical ID 8.
NOTE:
If your list includes an 008 OPT module, draw a line after the twelfth
logical ID, but cross off the last four logical IDs, since these jacks
cannot be used to physically connect telephone equipment. The
extension numbers of these logical IDs can be used, however, for
applications requiring phantom extensions.
2. In the Jack Type column of Form 2a, do
one
of the following to indicate the
type of each extension jack next to its logical ID:
■ If the jack is analog, check A.
■ If the jack is digital, check D.
■ If the jack is basic telephone, check B.
You are now ready to match the system telephones and other equipment to these
available jacks. After calculating touch-tone receivers as described in the next
section, begin matching equipment and jacks with Jack for Primary Operator
Position, and proceed through the subsequent sections as appropriate for the
system.
Touch-Tone Receivers (TTRs) 2
Use these guidelines for calculating the system requirements for touch-tone
receivers for systems both with and without a voice messaging system (VMS).
The number of TTRs needed in a MERLIN LEGEND system should be calculated
before the system is installed so that you can order the modules required to
supply the TTRs. However, as the volume of calls increases and more
applications are added to the system, TTRs may also need to be added. A system
that exhibits one or more of the following symptoms may need more TTRs:
■ Single-line telephone users do not get dial tone when they lift the handset
to dial out.
■ The voice messaging system fails to transfer calls.
■ Calls fail to ring or go to coverage prematurely.
■ Reorder tone on UDP/ARS calls using tandem tie trunks.
■ Delay in MWL tie trunks when tie trunks are available.