Digital Equipment DEClaser 3500 Installation Manual page 5

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For statutory purposes, apparatus connected to the PSTN
through a Relevant Branch System (RBS) is treated as if
connected directly to the PSTN. The definition of an RBS is
given in document BS6789 Section 6.1 clause 2.4.
Ringer equivalence number (REN): All equipment approved
for connection to the Public Switched Telephone Network is
assessed to determine its REN. This value indicates the degree
of load placed on the line by the apparatus and therefore
determines how the device affects the ringing characteristics of
other equipment attached in parallel.
The maximum permitted REN value for a single exchange line
is 4. If the sum of the REN values for attached equipment
exceeds this value, the ringer capacity of the line may be
exceeded and the attached equipment may cease to operate
correctly. The REN value of a standard BT telephone is 1
unless otherwise marked. The REN value of this apparatus is 1.
Because of the wide spread of ringing detector characteristics, a
guarantee of successful operation in an installation of mixed
types of ringing detectors can not be given by the supplier.
Approved functions: This apparatus has been approved for the
use of the following facilities:
Storage of numbers for retrieval by a pre-determined code
Automatic call initiation
Detection of Initial Proceed Indication
Detection of Secondary Proceed Indication
Operation in the absence of Proceed Indication
Automatic Multi-frequency tone (DTMF) or Pulse (Loop
disconnect) dialing
Automatic storage of last number dialled
Tone detection for Ring, Busy, Equipment Engaged, Number
Unobtainable
Manual repeat dialling of last number
Auto clear from call originating end
Automatic answering
Loudspeaker
Modem operation using the standards: V21, V23, V22, V22bis,
V27ter, and V29
Any other use invalidates the approval of the apparatus if, as a
result, it ceases to conform to the standards against which the
approval was granted.
190287-001 - 06/01/95 - - Saved by IDC - -
Rev # 2 - File Name EXFX_US6.DOC
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