Lucent Technologies MERLIN LEGEND Release 7.0 System Planning Manual page 100

MERLIN LEGEND Communications System Release 7.0
System Planning 555-670-112
2 Control Unit Configuration
Numbering the System
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:
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)
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 (private network
only).
Delay in MWL updates via tie trunks when tie trunks are available (private
network only).
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.
If the jack is analog, check A.
If the jack is digital, check D.
If the jack is tip/ring, check T.
If the jack is enhanced tip/ring, check E.
2
Issue 1
April 1999
2-18