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In order to meet the medium-sized enterprise needs, Essence Technology designs IPBX-1823 and IPBX-1825 series with powerful expandable function. At the same time, Essence Technology also provides various interface cards including FXO, FXS, ISDN and 3FXO/1FXS Life Line interface cards for clients to have high capabilities to traditional communication system. This way can assist our client to have an easy-to-employ and total solution and with other communication systems.

FXO (Foreign eXchange Office) connects with PSTN service and PBX. It can send out the DTMF signaling so as to connect to the PSTN lines. With FXS and FXO, users can dial the long-distant calls just as local calls via network in order to lower the cost of long-distant call. Moreover, it can integrate the extension numbers of branch offices in one company located in different areas in order to simplify the communication. Among all, the signaling control of FXO is much harder than FXS. Essence Technology offers 4-port FXO interface card to clients to choose.



FXO-81104 Introduction
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PCI Interface

RJ-11C Connect

Support G.729A, G.711, G.723 Codec

Voice Encoding /Decoding

Echo Cancellation

Codec Translation

In-band Signaling (DTMF Detection)

Quality Enhancement

Advanced Caller ID Detection and Generation

Polarity Reversal Inerrupt

Line Impedance Adjustment for Global Approvals

4-Port FXO Connections Implemented with 4 Ring LED Indicators





FXO Interface Card




Ordering Information


FXO Interface Card


Essence reserves the right to change specifications without prior notice. All brand names and trademarks are property of their respective owners.



10F., No.100-1, Minquan Rd., Xindian City, Taipei County 231, Taiwan (R.O.C.)


TEL:  886-2-8219-3636

E-mail: sales@essti.com


FAX: 886-2-8219-1212


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