KNZD-05LS customer service phone/prison phone is mainly designed for Banks, prisons, supermarkets, tourist areas, etc. The machine is high-grade and beautiful, all stainless steel body, excellent waterproof and dustproof performance; The 11-bit zinc-alloy key is wear-resistant and corrosion-resistant, and the handle transmitter and receiver has excellent anti-noise performance, which can effectively filter background noise.
No, the number of prisons is not allowed for prisoners to own mobile phones. The prison will install a strong voip prison phone to help prisoners contact the outside world.
The prisoner's talk time is usually determined by the regulations of different prisons, and some prison talk time is 10 minutes or 15 minutes. Every time the call arrives, the voip prison call will automatically hang up.
1. With auto-dial function ( also can set with four groups speed-dial number according to requirements)
2. Storage number can be modified freely.
3. With total function of normal phone
4. Vandal resistant and tamper-resistant hardware
5. Applicable for all the environment either unattended or attended
How to clear out number:
1. Open phone box, put the switch “1” to “ON” side on the PCB mainboard.
2. Connect telephone line and pick up the handset
3. Press the storage key (which have stored the number) twice.
4. Put the handset back on hook and put the switch “1” back to “1” side.
Main Product features
1.Robust aluminium alloy die-cast body.
2.Full keypad with memory,10 button or 4 button programmable speed-dial telephone,Iiluminated button optional.
3.Weatherproof standard, service temperature range from:0°C to +75°C.
4.Magnetic reed hook-switch.
5.Telephone Line powered.No external power or battery back up required.
6.Lightening protection to ITU-T recommendation K.21.
7.Handset:made of special engineering plastic, high anti-knock resistance,Weatherproof,armoured cable optional.
8.Hearing Aid compatible receiver,Noise canceling microphone.
9.Handset integrity wiring to enable the telephone system to check if the telephone unit is still operational.
10.Selectable 7 minute time out,to release the line if the handset is left off hook.
11.Vandal resistant and tamper-resistant hardware.
1.Well treated PCB used inside the phone.
2.Robust screw terminals used for the connection of ringer,handset,line in,hookswitch.
3.Selectable 7 minute time out,to release the line if the handset is left off hook.
4.All connectors be greased in production.
1.Kirk electro dynamic transducer for both handset transmitter and receiver.
2.Spring cable or armoured cable to attach the handset to the telephone main unit.
3.Stainless steel cable to connect exchange.
4.Inductive coupler fitted for hearing aid compatibility.
5.Handset integrity wiring to enable exchange to check if the phone is still operational.
VOIP OVER IP-SIP(Version)
Connection type:Rj45 Socket inside sealed enclosure
Power supply:External 5V dc
Call set-up Protocol:Session Initiation Protocol(SIP)
Configuration:DHCP or STATIC IP address provisioning
1.Applicatble for various types of SPC exchange and dispatching exchange system with feeding voltage of 33v-60v.
2.Ambient temperature:-30°C-70°C Relative
3.Sound level of ringing:>=70dB(A).
4.Standard frequency:low frequency group:697,770,852,941Hz,high frequency group:1209,1336,1477Hz,frequency deviation : <=+-1.5%,if service line is a 3km
signal-level: Standard frequency:low frequency group:-9dB+-3dB,high frequency group: -7dB+-3dB,level difference between low and high frequency of conpound signal:2+-1dB,
the total distortion caused by intermoudulation of harmonic wave is lower than the basic level by at least 20dB.
5.Call transmission index:(5KM)SLR<=12,RLR<=-1,STMR>=10,output impedance is 600Ω.
6.Super strong function is avaiable for dialing 12 groups of numbers stored in the memory.(maximum length of each store number is 16 digits)