Ringing During Esa Mode; Treatments During Esa Mode; Esa Limits - Nortel DMS-100 Series Maintenance Manual

5-16 ESA maintenance overview

Ringing during ESA mode

The Star Hub requires duplicate ringing generators. The ringing types
supported during Star Hub ESA mode are:
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Treatments during ESA mode

The treatments supported during Star Hub ESA mode are:
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ESA limits

The following limits apply to the Star Hub in ESA mode.
Limits during the ESA mode
Limits during the ESA mode for POTS lines and features are
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Limits during the ESA mode for MDC lines and features are
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297-8353-550 Standard 05.01 March 2001
coded ringing
frequency-selective ringing
superimposed ringing
busy tone
reorder tone
receiver off-hook (ROH) tone
The system provides for the three-to-ten digit POTS dialing plan
The system provides for unlimited HNPA code for each Star Hub
The system supports the MDCXLA translation selector (number of digits
in the extension number) for station-to-station calling. If the selector does
not receive data, the system uses POTS translation.
The system does not support network class of service (NCOS) for MDC
lines. Customer groups or lines are restricted to a dialing plan that is
common to every customer group.
For support during the ESA mode, the primary number of a MADN group
must be an MDC business set PDN key or a 500/2500 Set directory
number.
Non-ISDN calls are supported in ESA, while for ESA lines, when the Star
Hub enters ESA mode, ISDN calls are released. If an ISDN call tries to
originate after ESA mode is entered, the call is ignored.
Note: The system does not support every MDC and POTS feature or
line.