Teleline – OPX
OPX Plug-in Isolation Card
The Plug-in Off Premise Extension (OPX) Card is used to provide high voltage isolation for a wide variety of telephone voice grade applications involving the bi-directional transmission of AC and DC voltage. It is available in two options, as listed below
- 7501-16B designed for a -24 Vdc source referenced to station ground
- 7501-16C designed for a -48 Vdc source referenced to station ground
Applications:
- Off Premises Extension (OPX)
- POTS
- Direct Inward Dial (DID) loop start
- Automatic/Manual ring down
- Radio keying
- Loop start telephone
- Call waiting pulse
- Forward disconnect
- POTS with Caller ID
- Coin telephone (two cards required)
- Simplex continuity when used with four-wire DX signalling
- Fax and dial-up “smart” modems (up to 56.6 kB modem, speed of 45.3 kB/s if line permits)
Features
- The card may be used with all Teleline Isolator Shelves
- The OPX Card is completely bi-directional to all loop signalling, i.e. line voltages can originate from either Station or CO side loops. Bi-directional modulator/demodulators are used to realize a circuit which behaves as an ideal 1:1 isolation device
- Varistors provide transient voltage protection to the isolation device
- The OPX Card provides low loss, full duplex DC-to-voice band communication
- The OPX Card transmits on/off-hook, dial pulses or touch tone signalling, ringing, polarity reversals, AC and DC voltage and current levels
- Impedances applied to either side of the card are reflected to the opposite side
The OPX Plug-in Isolation Card can be housed in any vintage of the 3-card shelf, the 5-card shelf, the 8-card shelf, or in any of our High Voltage Interface (HVI) pre-configured units.
PRODUCT | CLEI CODE | DESCRIPTION | DOWNLOAD |
---|---|---|---|
7501-16B | NPPMP281AA | OPX Plug-in Isolation Card -24 Vdc | User guide Specification |
7501-16C | NPPMP291AA | OPX Plug-in Isolation Card -48 Vdc | User guide Specification |
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