NEC Australia Pty Ltd Xen Master & Xen Axis
5 - 152 Installing Electronic Telephone Units
A6-324000-642-01 – Release 4.0
May 2001
5.2 PBR( )-U13 ETU
5.2.1 Description
The Push Button Receiver (PBR) ETU detects and
translates DTMF tones generated by Single Line
Telephones, modems, or facsimile machines, etc. This
ETU is required if the four built-in PBR channels are not
enough to support all the PBR requirements of the system,
or the CPUB( )-U13 PBRs are dedicated to the VRS(4)-
U13 ETU. Refer to Figure 5-27 PBR( )-U13 ETU.
5.2.2 Installation
A maximum of one PBR( )-U13 ETU can be installed in the
Xen Master (slots S1~S8) or Xen Axis (slots S2~S7)
systems to provide a total of eight PBR circuits.
Figure 5-27 PBR( )-U13 ETU
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