Phone Billing Router

Phone billing router, support PSTN/VOIP/GSM/CDMA available . With it, can achieve IP numbers pre-setting etc.
Specifications: Size: 218*150*45mm Weight: 1.2 Kg Features: Voltage: 110V~220V ACCapacity: 4 PSTN line ports and 4 telephone ports. Communication interface: COM Functions: 1. Can set up to 48 routing Numbers. 2. Call in permission setting function. 3. Can switch on or off any voice channel when it is needed. 4. IP access number pre-setting functi5. Factory setting restoring function. 6. Can receive reverse signal and pass through 12/16KHZ pulse signal7. Calls can get through without routing function when power is off.8. Can test the corresponding line with the telephone.9. Password protecting function.