




characteristic:
·Wide range of single power supply 3V-5.5V
·Internal DC/DC converter
·Internal ringing flow function
·Positive and negative pole function
·2/4-wire conversion
·Constant current feeding
·Specially designed for GSM network
·Low price and high performance
Application:
·Wireless public telephone user interface
·MODEM interface
·IP gateway voice interface
·Wireless access user interface
·Set top box voice interface
Indicator:
·Typical unbalance degree to ground 60dB (300Hz-3400Hz)
·Impedance characteristic 600 Ω
·4-wire return loss>24Db
·Typical value of weighing noise - 75dB
·Typical value of ringing current voltage 90VP-P
·Feed current 23mA
·Power supply voltage 3.2V-5.5VDC
Package Included: 1pcs
We appreciate your feedback very much. As it will motivate us do better. If you have any questions with our goods or service, Please kindly contact us firstly before leaving negative feedback. Thank you in advance
1. All merchandise will be carefully test before shipping. We will try our best to avoid any quality problem.
2. We promise warranty for quality in one year and we will repair it free of charge. The returning shipping should be paid by customer.
3. If you are not satisfied with the product, Please contact us. We'll provide you a satisfying solution.
1.Normmly we will send the goods within 1-3 working days after your payment is verified .
2.Please check if the goods are in good condition and sign before the delivery man leaves.If you find the product is lost or damaged on the way. Please take photo and let the delivery men confirm it. Then we will help you let the shipping company compensate you.