NEC Electra Elite IPK II System User Manual page 1085

Electra Elite IPK II
System Availability
Terminals
All Stations
Required Component(s)
SLIB(4)-U10 ETU
SLIE(4)-U10 ETU
Related Features
Barge-In
Caller ID
Direct Inward Line (DIL)
Hold
Message Waiting
One-Touch Calling
Programmable Function Keys
Transfer
Programming

10-09-01 DTMF and Dial Tone Circuit Setup
Assign at least one circuit for DTMF reception (type 0 or 1).
Use the following as a guide when allocating DTMF receivers:
In light traffic sites, allocate one DTMF receiver for every 10 devices that use them.

In heavy traffic sites, allocate one DTMF receiver for every five devices that use them.

Voice Mail Integration (Analog)
Document Revision 4C
2 - 1061