Telephone Guard Suppliers and Manufacturers

Telephone Guard Features: Protect the phone conversation from eavesdropping and listening. Auto stop telephone recorders from recording. Prevent the telephone line from burglary. Alert the telephone user from the third party intrusion. 24 hour auto scan and ensure the telephone line in good working condition. Suitable for touch tone and pulse telephone. Compact design for easy carry and installation anytime. No battery needed. Standard color box

Antique telephone 1.Fsk/dtmf, 30 caller id memories, call back and auto redial. 2.Last 5 outgoing number and time memories. 3.Thunder proof. 4.Local code setting. 5.Peaker phone. 6.Clock show. 7.Material:wood. Inner box size:27.8cmx23.5cmx35.6cm Outer box size:72cmx56.5cmx36.6cm

Antique telephone 1.Fsk/dtmf, 30 caller id memories, call back and auto redial. 2.Last 5 outgoing number and time memories. 3.Thunder proof. 4.Local code setting. 5.Peaker phone. 6.Clock show. Inner box: 26.7cmx20.9cmx31.1cm Outer box: 72cmx56.5cmx36.6cm

1.FSK/DTMF compatible ,detected automatically. 2.Incoming/outgoing number memory 3.Auto redial/redial/recall 4.Flash time adjustable 5.Calendar 6.Anti-thunder design 7.Anti-steal dial protection others.

1.Outgoing/incoming number memory 2.Auto redial/redial/recall 3.IP number memory 4.Caller ID function 5.Caleandar time display.

1.FSK/DTMF dual system /caller ID function 2.In On-hook stage pre-dial / edit dialing number . 3.50 incoming / 16 outgoing calls memories in 8 digital number. 4.Tone/Pulse Dialing mode selectable. 5.Ringer / speaker volume H/L adjustable 6.Automatically redial / redial / Ring back function. 7.Calendar / time display. 8.16 ringer selectable. 9.No disturb function. 10.Anti thunder protection 11.Steal dialing protection.

Telephone

Caller id telephones Fsk/dtmf/etsi system compatible, 16 chord melodies, 60 incoming calls, 49 outgoing calls and 60 vip numbers, ogm funciton, etc... Not available

Model KTH15 Max input DC voltage DC66V Max input circuit Current 60mA Max input bell stream voltage 105v Max input bell stream circuit current 120mA Weight (kg) 3.8kg Communication Distance â?¤10km,model: MHYV1*2*7/0.37 Bell ringing level â?¥95dB Material ABS Protection Level IP65 Installation Wall Mounting/Table Linker coupler KTA12 coupler T/P Way Tone and Pulse Function Explosion proof /waterproof/ anti noise -

Caller ID telephone 20pcs/CTN

APPLICATION Suitable for inside prisons, labor camps, drug rehabilitation and other intercom, communication and other places which need monitoring.

KTH17B Max input DC voltage DC52V Max input circuit Current DC 65mA Feed voltage DC48V Bell ringing voltage DC24-48V Net Weight (kg) 1.65kg Size (mm) 285mmÃ?175mmÃ?135mm Communication Distance â?¤5km,model: MHYV1*2*7/0.37 Belling Grade â?¥80dB Material ABS Protection Level IP54 Installation Wall Mounting/ desk top Link coupler KTA16B safe coupler, connect to 10 phones Dial model DTMF Function Explosion proof /waterproof/ anti-dust /anti-corrosion -

1. Match light are multiplexed lines. 800Hz telephone impedance is 800Ω ± 20%. 2 .Through two telephones on the same model, in less than 75db audio noise conditions, the communication distance up to 21 km. 3. In temperature -40 â?? (using cold battery) - +50 â?? 750 ± 30mm Hg pressure and temperature of +40 â??, relative humidity up to 98% of the reliable work environment. 4. All parts are fixed on the rack into one, along with mobile phones are loaded into the enclosure, solid structure to carry and easy to use. 5. Volume : 222*195*107mm3 ã?? 6. Weight : about2.5Kg -

Voip phone Two separated uart for cpu and dsp+32-bit risc cpu with 125mhz clock rate+16-bit fixed-point dsp with 125mhz clock rate+max. Support 32mbytes sdram and 16mbytes flash Support 1 line for voip call, sip(rfc2543, arfc3261)+phonebook with 100 groups memory+ Network protocoltftp client/dhcp client/ pppoe client+telnet/http serverdns client+ipftcpfudpf rtpfrtcp+ipficmpfarpfrarpfsntp Voice qualityvad: voice activity detection+cng: comfortable noise generato+lec: line echo canceller+packet loss compensation+adaptive jitter buffer+ Codecg.711: 64k bit/s (pcm)+g.723.1: 6.3k / 5.3k bit/s+g.726: 16k / 24k / 32k / 40k bit/s (adpcm)+g.729a 8k bit/s (cs-acelp)+g.729b: adds vad & cng to g.729+ Call functioncall hold+call waiting+call forward+caller id+3-way conference Dtmf functionin-band dtmf+out-of band dtmf+sip info+ Sip serverregistrar server (three sip account)+outbound proxy+ Phone functionvolume adjustment+speed dial, phone book+flash+speaker phone+ Ip assignmentstatic ip and dhcp+pppoe support for adsl or cable modem+ G securityhttp 1.1 basic/digest authentication for web setup+md5 for sip authentication (rfc2069/ rfc 2617)+

1.Handset body made of speical engineering plastic PC 2.Vadanl resistant, Good for fire resistance and hand feeling 3.Intensity of tension for armoured cord >250kg 4.Pierce-proof and hi-fi transmitter and receiver 5.Good call transmission of the matching phone, 4.2-in-GB/T15279-94-compliant package:25pcs /ctn carton demension:430*375*380mm

Description: Defend grade: GB 4208-93 IP 66 / IP 67 Call capability of phone: GB/T 15279-94 Application scope: metro, light railroad, speedway, ship, mine, etc. External configuration specification: External dimension: 320*205*120mm Weight: 5.5Kg Installment dimension:139*260mm M8 bolt is used to install. 320*205*120mm.

Caller ID phone Fsk/dtmf system compatible&fsk auto-adust raal time Pre-dial 32 digits number which can be edit like mobile phone Lcd contrast 5 levels adjustable big lcd display with back light Records 25 incoming(16digits)and 8 outgoing numbers(max 18 digits) 33 vip number setting , play ringer melody and hold on music of the melody Voice incoming number in arbic and english selectable 2 step lock, lock the number led by fªofªopen hands-free talking and volumeadjustable auto-redial , ring back when connect 5 alarm clock redial , pause .P/t flash function 44.9*33.3*44

Voip Monochrome 128*64 pixel dot-matrix graphic lcd , supports all kinds of languages Skype contact list, call list and time display on lcd screen 8 classical 4-polyphonic ring tones catering to different tastes. Rings loudly on an incoming call. Fully functional keypad and lcd display of skype contacts enables you to make/receive calls without using mouse and keyboard. Acoustically isolated earpiece and microphone to eliminate echo. Full-duplex communication with crystal clear sound. Usb interface pnp. No external power/sound card needed. Handy, chic, and portable for notebook pc. Also compatible with other pc-based softphone applications, such as msn, yahoo message, qq, xten, dialpad, mediaring, net2phone, etc. Dimensions: 105mm*40mm*18mm Weight: 90g