Baud Rate
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 Super Mini ELM327 V15 OBD II Bluetooth OBD2 Car Diagnostic Tool  US $19.99
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 OBD2 Scanner OBDII CAN BUS Auto Diagnostic USB Interface Code Scanner Reader US $12.65
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 ELM327 V14 Wired USB OBDII CAN BUS Diagnostic Scanner US $9.99
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 v15 Mini ELM327 OBD II OBD2 Bluetooth scantool auto scanner code reader elm 327 US $18.92
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 ACR 2846 Cat I IPRO EPIRBw GPS NIB US $995.99
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 Columbus V 900 BT GPS Data Logger w microSD slot US $69.99
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 Car Scanner AUTO Scan Tool diagnostic code reader OBD2 OBDII USB ELM327 V14 New US $9.99
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 4G card free map 8 CAR DVD Player GPS Navigation for TOYOTA CAMRY 2007 2011 US $329.99
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 V14 ELM327 OBDII OBD2 CAN BUS Diagnostic Scanner Scan USB For Car Auto Vehicle US $11.88
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 ELM327 Bluetooth OBD 2 CAN V15 Scan Tool Auto EOBD II US $13.45
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 Mini ELM327 Interface V15 Bluetooth OBD II OBD2 Auto Car Diagnostic ScannerTool US $17.99
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 ELM327 Bluetooth OBD2 OBDII CAN BUS V15 Auto Car Diagnostic Interface Scanner US $18.90
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 GPS Navi Navigation in dash car DVD Player gps For Car BMW X5 SERIES E39 E53 M5 US $538.50
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 8 Car DVD player GPS for MITSUBISHI OUTLANDER 2006 2011 PEUGEOT 4007V US $399.99
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 7 Car DVD Player GPS Navigation PIP 3D for FORD FOCUS 2008 11 MONDEO S MAX US $349.99
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 2 Din DVD GPS NAVI Player For FIAT BRAVO BLUETOOTH IPOD US $616.46
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 V15 ELM327 OBD2 OBDII CAN BUS Auto Diagnostic USB Interface Code Scanner Reader US $12.99
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 ELM327 OBDII OBD2 CAN BUS Scanner V15 USB Car Diagnostic Scanner Interface US $18.24
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 GlobalSat G SAT BT 359 BT359 SiRF Star III Bluetooth GPS Receiver Module US $25.99
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 Royaltek RBT 2100 Bluetooth Car SIRF III GPS Module US $18.99
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 ELM327 USB To OBDII Car Diagnostic Cable for All Models US $14.82
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 Digital Yacht NMEA to Wireless Wi Fi Adapter 38400 Baud US $275.25
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 Qstarz BT Q818XT 10Hz Bluetooth GPS Receiver US $78.88
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 8 Car DVD Player GPS Navigation for TOYOTA CAMRY 2007 2011 Free GPS Map US $370.00
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 ELM327 V15 Mini Bluetooth Wireless OBD II OBD2 Auto Car Diagnostic Scan Tool US $15.99
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 8 Car DVD Player GPS Navigation for KIA Optima 2012 Free Lastest GPS Maps US $410.00
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 OBD2 OBDII V15 ELM327 USB CAN BUS Auto Interface Diagnose Software For VW BMW US $14.99
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 ELM327 OBDII OBD II OBD2 Interface Bluetooth V15 Auto Diagnostic Scanner Tool US $13.44
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 7 Car DVD Player GPS Navigation for KIA Sorento 2010 2012 Free GPS Map US $398.00
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 8 Car DVD Player GPS Navigation System for TOYOTA CAMRY 2007 2011 Free GPS Map US $368.00
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 8 Car DVD Player GPS Navigation for TOYOTA Corolla 2007 2011 Free GPS Map US $370.00
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 Free Map 8 In dash DVD Player Car GPS Navigation for TOYOTA COROLLA NEW VERSON US $368.00
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 Car Diagnostic Scanner Interface Auto Tool CAN BUS OBD2 OBD USB ELM327 V15a US $18.24
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 Laptop GPS Receiver Antenna Google Map NetBook PC USB E US $32.00
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Telephone Management - Options For Data Acquisition
A Telephone Management system uses CDR or call data records as produced by the PBX as its most fundamental input. Without data input a telephone management system is useless. Collecting data is a specialist skill, its importance is often overlooked and not given the attention it deserves.
Each call data record CDR has a real value as it contributes to the accuracy of the Telephone Management system as a whole. If call records are lost the accuracy of reports suffers as a consequence.
A PBX outputs CDRs by one of three methods, IP data, Serial data and as a file. Each format must be handled very differently.
Via Serial
Normally produced from a serial RS232 port and shares the limitations of serial data. The specification of RS232 limits the cable length between the sender and receiver to 15 meters. In reality this can be much further, and can often work up to distances of 50 meters. However for reliable transfer of CDR we should attempt to stay within the publish specifications.
IP data:
Within this category there are two methods. The first, a PBX may produce call records and simply drop them onto the network in addressed packets. This method has no service guarantees at all. Taking this method to the extreme, it is possible to transport addressed packets over the Internet however, with valuable data, this is unreliably and not recommended. Even data transported over an Intranet in this manner may suffer from packet loss and therefore the Telephone Management system useless. The second method uses hand shaking between the devices creating a reliable data collection channel.
Via a File
The PBX writes CDR to a file in a shared directory, where the Telephone Management system can access the information.
By definition, serial and IP data need additional equipment to ensure reliable collection of CDR. Several companies offer a solution for this in the shape of a Call Buffer. A call buffer device, normally located technologically close to the PBX receives the CDRs, stores and forwards them safely to the Telephone Management application.
Types of call buffer
Serial data in - Serial data out. The device receives call records at a particular baud rate store the data until the host application is ready to receive it, then forwards it a baud rate suitable to the host.
Serial data in - IP data out. We use this device to receive serial and change it to IP for transmission over a local area network.
Send CDR over the Internet: A device that collects either serial or IP data and delivers it via secure protocols to the web based telephone management service. The data delivery method may be FTP, HTTP, and even SMTP mail. These methods can be made secure and reliable by messaging between the Call Buffer and the host Telephone Management system.
Data collection devices come in the form of either a solid state ultra reliable purpose built box, or can be a software program running on a PC within the client environment.
The price of Data Collection Devices varies wildly between suppliers with a high of around US$500 and a low of US$200.
About the Author
Mike Guile brings 25 years of experience to bear on a problem many companies have, managing their telephones efficiently. He offers new customers a free trial of the worlds leading telephone management Internet application, for any size site. He gives email support personally to all his customers. Try it and benefit.
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