4FXO (Foreign Exchange Office) Telephony Trunk Interface Module
The Analog Trunk FXO is an interface that connects to a trunk line,
like the one from your service provider. It receives ringing
voltage and battery from FXS devices. FXO interfaces are used to
connect your PBX to the PSTN. One FXO channel is required for each
line you receive from your telco.
The Analog Trunk FXO provides connectivity to analog central office
loop start trunk line analog interfaces. And it can be combined
with BRI, PRI, and GSM modules.
Typically, a phone is connected to a loop start line from the Telco
and is, by default, in an on-hook state. When the phone goes
off-hook, the phone completes the line circuit, and current flows
through the line. The Telco provides an audible dial tone to the
phone and accepts dual-tone multi-frequency (DTMF) digits from the
caller.
The Central Office Interface Circuit (COIC) is the heart of the
loop start Analog interface, and takes the place of a telephone
when connecting to the Telco.
The loop starts Analog Interface provides the following features:
- Detects ringing when on-hook
- Detects loop current when off-hook
- Detects when tip/ring voltage crosses a set voltage when on-hook or
off-hook (called DC triggering)
- Can accommodate private branch exchange (PBX) with –48 V battery
voltage
- Loop current range: 13-110mA
- The voltage detection threshold is software-selectable
QA
Q: Can ZYCOO's software be customized?
A: Yes, but there is a corresponding extra charge.
Q: Does ZYCOO support OEM/ODM?
A: Yes, ZYCOO also offers various types of embedded hardware boards
for ODM and OEM customers.
Q: How do I purchase? Where can I get a quote?
A: Please contact the ZYCOO sale department at zycoo@zycoo.com for
quotes or additional information.
Q: What is the geographic availability For ZYCOO products?
A: Zycoo is globally available. Contact us today to get more
information.
Q: For additional support or answers to questions not covered in
this FAQ, who should I contact?
A: Please contact us at zycoo@zycoo.com
WHY CHOOSE US
- ZYCOO, is the leading developer and manufacturer of IP telephony
devices and related systems, devoting itself over the past years to
R&D powerful and scalable voice over IP (VoIP) solutions that
mainly serve the SME market.
- With the deployment of distribution channels and branch offices in
Czech Republic and UAE, ZYCOO products and solutions have been
deployed in more than 100 countries and trusted by over 100,000
satisfied customers. Customers can enjoy direct sales,
tech-support, training, and after-sale service while using ZYCOO
products and solutions.
- Besides branded product, ZYCOO also offers various types of
embedded hardware boards for ODM and OEM, as well as software
modification or white-label. ZYCOO always keeps pace with the
innovative VOIP technology and provides cost-effective products and
services to customers.
