タイトルまたは説明

can convert the phone card into a telephone line and provide reverse pole signalto accurately billing.

Can access tel set from outside; set various of functions; facilitate the equipment to do compatibility adjustment.

-Carry with two RJ*1 telephone port，easily parallel connect landline,recording box and other similar equipment.

-LCD English display screen, digital visual display signal strength value.

-Telephone box can automatically supply voltage 5V**2V, which can easily apply power for all kinds of security equipment.

-Circuit with anti-jamming design, no noise in the call and other noise, sound clear.

*3 meters pure copper antenna, suitable for some bad signal scene, improve the communication signal.

-Built in watchdog system; when the system doesnt work,  will automatically restart to prevent crash or other situation.

-Products can optional add an additional built-in battery, suitable for some security and elevators. Application of the blackout to make the distress call phone.
 

Through the external connect telephone , clear all the parameters and reset it.
-The call volume can be set to avoid the sound is too large to produce an echo.
-The IP prefix can be set by key. Different IP prefix can be provided for local, long distance or international call.
-The DTMF call ring can be set. Also perfectly compatible to solve a variety of caller ID is disappear or incomplete. 

(First ringing and then show the number or the first number and then ring)
-Caller ID supports FSK for special models, through the key settings to take effect. For only support FSK caller ID device.
-Can be set to prohibit incoming calls. Can be set an incoming call list or an incoming blacklist.
-Can set the second dial mode and automatically use it to outgoing call.

 (The second dial mode does not provide an accurate "reverse pole" signal.)
-Partial custom models can support the key setting in *2K or *8K billing signal mode.
-Can be set the phone box comes with the screen or external telephone screen display device communication module IMEI.
-Can manually modify IMEI of module and offer the specified phone IMEI for the particular application.
-Can be set to "take up time", "busy tone time" to adapt special equipment applications in ideal compatibility.