Specifications

Appendix E: The FaxPress 7500-DID and E&M
E—21
If the dtmf.log does not begin capturing digits, take the line connected to the trunk
in question and disconnect it from the Line on the right side of the 7500.
Connect a standard household (analog) phone to the first line going from the PBX
to the FaxPress. Call a DID number and pick up the phone’s handset when it rings.
Listen to make sure you hear only the correct number of digits being sent by the
PBX.
Your phone system may be set up to add digits to the front or end of the numbers
sent to the FaxPress. It is imperative that the phone system not send these touch
tones. By listening, you can tell if they are being added. If so, research the
programming of the PBX to determine if these digits can be removed.
Issue: FaxPress cannot send outgoing faxes.
Make sure there are dial tones on all connections between the PBX and FaxPress.
Also, test to see if dialing “9” breaks the internal dial tone and connects you to the
phone company’s dial tone. If so, make sure that the FaxPress is configured to dial
“9,” first before sending any outbound faxes.
Technical Specifications and Safety Information
FaxPress 7500 Technical Data
T
ELEPHONE
I
NTERFACE
Impedance 600/900 Ohm
Insertion Loss < 3dB
Trunk Resistance 0 Ohm to 1800 Ohm
Trunk Loop Current 16mA to 60mA
Battery Feed
Voltage
-48VDC, +/-10%
TRUNK
Resistance
0 Ohm to 400 Ohm
Wink Duration 248ms nom.
Hook Flash
Duration
500ms