P
AGE
2
05774-0598 <90-00122>
NOTE: This section lists the different options available for this product. To order any of the avail-
able options, contact Dantel Inside Sales through our toll-free number, 1-800-432-6835.
OPTION NUMBER
FEATURES
A18-05774-00
Wired only. No modules.
A18-05774-01
Equipped VNET Interface Shelf
ORDERING INFORMATION
GENERAL DESCRIPTION
T
his unit is designed to be a 4 wire, DTMF controlled PBX
interface that will output battery or ground on its M lead and
it will accept battery or ground on its E lead depending upon the
user’s requirements.
The unit is designed so that the caller, from the PBX side, will
shout down to the desired remote after the VNET interface has
been accessed. No DTMF signaling to the remote Order Wire
stations will be used. The DTMF signaling is only used to get
access for the order wire to the PBX.
The user calling from the order wire side of the system will dial
3 digits plus “*” to gain access to the order wire. The same 3
digits plus “#” will release the system. Either party hanging up
will release the system. The unit will operate from -21 to -56
volts with levels of +7 to -16 dBm on any port, using the Dantel
44118 VF bridge. In this application, port 4 (which is used for
PBX acces) will be set for -6dBm on the RX input and 0dBm on
the TX output. All other ports will be used for the order wire and
will be +7 dBm on the RX and -16 dBm on the TX.
The OW interface will be made up of:
♦
An A17-44020-01, comprised of the A12-49018-00 Station
Selector combined with the A11-44020-00 DTMF decoder in
slot 1 (J1).
♦
An A17-44931-01, comprised of the A11-44931-00 timer com-
bined with the B12-49031-00 sub assembly timer in slot 2
(J2).
♦
The A17-44118-00 4W/4W VF bridge in slot 3 (J3).
With this application, there is no signal tone sent to the PBX
telling the user that he has access to the OW system after he
has dialed the access number for the OW interface. The user will
shout down for the desired station required.
