Feature implementation 6-7
Meridian SuperNode MSL-100 Intelligent Peripheral Equipment (IPE) Reference Manual MSL14
The following set messages are supported for analog sets:
•
Ring ON and Ring OFF
•
Message Waiting ON and Message Waiting OFF (MLC only)
•
On-hook and Off-hook
•
Digit 0 through 9 selected (500 sets only)
•
Hookswitch Flash
Cutoff on Disconnect
The Cutoff on Disconnect (COD) feature provides a momentary interruption
of battery voltage toward a 2500-type device when a distant party disconnects.
The COD feature is useful if the 2500-type device attached to the SL-100
analog port is capable of tearing down a call that has been terminated by the
distant end. Examples where the COD feature is useful are for modems,
paging equipment, voice mails, and other automated equipment.
If an IPE analog port is configured in the SL-100 database with the COD
feature, it provides re-originate dial tone to the 2500 device upon distant-end
disconnect, but no interruption of battery voltage. The IPE analog line card is
not configured with a relay in series with each 2500 port.
Hardware and software requirements
The COD feature requires the Cutoff on Disconnect Controller Model CDC-12
hardware manufactured by third-party vendor Telecom Strategies, Inc. (TSI).
The CDC-12 hardware provides the momentary interruption of battery voltage
toward a 2500-type device when a distant party disconnects. This feature also
requires patch WEC05 to support the COD feature datafill.
Auto recovery DLM/IPEs
The Auto Recovery DLM/IPE feature implements the conversion of the DLM
and IPE peripherals to use the System Recovery Controller (SRC) in order to
coordinate automatic recovery activities.
The SRC is software that acts as a high-level intelligence to coordinate the
work and optimize the system resources necessary for automatic recovery
following system restarts and degradations.
The most visible functionality gained from this feature, with respect to the IPE,
is the ability to automatically broadcast-load groups of IPE peripherals. Before
this feature, broadcast-loading was only possible by use of manual commands.
The implementation for both DLM and IPE is the same with the exception of
where the units themselves are involved. A DLM node consists of two units,
while the IPE node consists only of a single unit (the IPE node itself).
Therefore, the IPE interacts with the SRC and its utilities as a node, while the
