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Appendix B: Glossary and Acronyms

u-law

Also known as mu law, is the PCM quasi-logarithmic curve. It is the 64
Kbps standard North America voice amplitude sample used for
encoding/decoding.

volts

VoIP

Voice over IP

Technology used for transmitting voice traffic over a data network using
the Internet Protocol.

Digium, Inc.

Page 44

Содержание TC400B

Страница 1: ...TC400 Series TCE400 TC400B User Manual 601 00007 Rev B3...

Страница 2: ...d error free The manufacturer will if necessary explain issues which may not be covered by this documentation The manufacturer s liability for any errors in the documents is limited to the correction...

Страница 3: ...Compliance Information Compliance information for this product is available at http www digium com ccs compliance Digium Inc Page 3...

Страница 4: ...ard This chapter covers applications and uses of the TC400 Series in the real world 2 Card Installation Provides instructions for installing the card in your PC acquiring correct drivers and checking...

Страница 5: ...es as instructed The ESD symbol indicates electrostatic sensitive devices Observe precautions for handling devices Wear a properly grounded electrostatic discharge ESD wrist strap while handling the d...

Страница 6: ...this card unless specifically instructed to do so Do not attempt to remove the card from your equipment while power is present Refer servicing to qualified service personnel Water and Moisture Do not...

Страница 7: ...l Center 15 Asterisk in the Network 15 Asterisk Everywhere 15 Chapter 2 Card Installation 16 Unpacking the Card 17 Shipment Inspection 17 Slot Compatibility 20 Hardware Installation 22 Software Instal...

Страница 8: ...Table Of Contents Appendix A Specifications 33 Appendix B Glossary and Acronyms 35 Digium Inc Page 8...

Страница 9: ...5 6 List of Figures Figure Sample Telco Application 12 Figure Sample Network Application 13 Figure TC400B Card 18 Figure TCE400 Card 19 Figure Motherboard Slots 20 Figure Insert the Card 22 Digium Inc...

Страница 10: ...List of Tables Table A 1 Maximum Power Consumption 34 Digium Inc Page 10...

Страница 11: ...e very expensive in terms of MIPS and require a substantial amount of CPU time to accomplish A TC400 Series card not only relieves the CPU of this duty freeing it up to handle other tasks or to comple...

Страница 12: ...associated with Digium s software based G 729a codec licensing Features 120 channels of bi directional G 729a 8 Kbit transcoding or 92 channels of bi directional G 723 1 5 3 Kbit and 6 3 Kbit transcod...

Страница 13: ...Chapter 1 Overview Figure 2 Sample Network Application Digium Inc Page 13...

Страница 14: ...nd connecting callers with the outside world over IP analog POTS and digital T1 E1 connections Asterisk runs on a wide variety of operating systems including Linux Mac OS X OpenBSD FreeBSD and Sun Sol...

Страница 15: ...added new life to existing call center solutions by adding remote IP agent capabilities advanced skills based routing predictive and bulk dialing and more Asterisk in the Network Internet Telephony Se...

Страница 16: ...Inspection on page 17 Slot Compatibility on page 20 Hardware Installation on page 22 Software Installation on page 23 Note The TC400 Series card installation instructions are written so that they wil...

Страница 17: ...during shipment Note Only qualified service personnel should install the card Users should not attempt to perform this function Shipment Inspection The following items are included in the shipment of...

Страница 18: ...Chapter 2 Card Installation Keyed for 3 3 or 5 volt PCI TC400M voice processing module Figure 3 TC400B Card Digium Inc Page 18...

Страница 19: ...Chapter 2 Card Installation Figure 4 TCE400 Card Digium Inc Page 19...

Страница 20: ...ble with your PCI slot To determine which slot you have identify it by comparing it to those shown in the figure below Slot Number 0 AGP Pro Slot 1 64 bit 5 0 volt PCI Slot 2 64 bit 3 3 volt PCI Slot...

Страница 21: ...will fit into Slots 1 2 or 3 PCI slots but will not fit into Slot 0 AGP slot The TCE400 card is a PCI Express card Slot 4 illustrated above is a 1 lane X1 PCI Express compliant slot The TCE400 will wo...

Страница 22: ...r and unplug it from its power source 2 Attach a static strap to your wrist and open the case 3 Remove the bracket place holder and insert the card into the PCI or PCI Express slot See Figure 6 Figure...

Страница 23: ...introduction to Asterisk Digium s telephony software including additional information on its configuration setup and features please refer to http www asterisk org For the latest information on settin...

Страница 24: ...the Asterisk and DAHDI software for the best results If you have previously installed either of these Digium recommends that you upgrade to the latest current version of each Note If you are using th...

Страница 25: ...mpile its contents and install the drivers and tools Substitute the version of DAHDI for the X X X in the command lines below tar zxvf dahdi linux complete current tar gz cd dahdi linux complete X X X...

Страница 26: ...c400b0 Attached to device at 0000 00 0a 0 wctc4xxp tc400b0 G 729a G 723 1 Transcoder support LOADED firm ver 6 12 wctc4xxp tc400b0 Installed a Wildcard TC Wildcard TC400P TC400M dahdi_transcode Regist...

Страница 27: ...X in the command below Asterisk is available for download from http downloads digium com pub telephony asterisk wget http downloads digium com pub telephony asterisk asterisk X X current tar gz 2 Exp...

Страница 28: ...sterisk configuration files that you have in the etc asterisk directory If your installation has failed it may be because you are missing one or more of the build dependencies the kernel headers or th...

Страница 29: ...and 6 3 Kbit mode g729 This option will enable 120 calls of G 729a mode g723 This option will enable 92 calls of G 723 1 5 3 Kbit and 6 3 Kbit The mode module parameter may be set in either etc modpr...

Страница 30: ...by typing asterisk vvvvc 2 Verify that the TC400 Series is registered with Asterisk by issuing the following command on the Asterisk CLI CLI transcoder show This should display the number of encoders...

Страница 31: ...of open file descriptors allowed on your system using the ulimit utility First log into a Linux shell as the user running the asterisk process i e usually root Check the current maximum by executing...

Страница 32: ...obe dahdi_dummy Where can I ask even more questions There are several places to inquire for more information about Digium products 1 Digium Technical Support 1 256 428 6161 is available 7am 8pm Centra...

Страница 33: ...6 cm PCB size does not include the PCI bracket Weight 2 5 oz 70 9 gm Interfaces PCI Bus TC400B 3 3V or 5V bus slot half length slot minimum size 33MHz minimum bus speed compliant with PCI 2 2 or grea...

Страница 34: ...a law Hardware and Software Requirements 400 Mhz Pentium III or better 512 MB RAM Available PCI or PCI E Slot as described previously Linux 2 6 kernel Table A 1 Maximum Power Consumption Model Power T...

Страница 35: ...es standards for international communications asynchronous Not synchronized not timed to an outside clock source Transmission is controlled by start bits at the beginning and stop bits at the end of e...

Страница 36: ...The channels take up different frequencies on the cable integrating voice data and video over one line channel A generic term for an individual data stream Service providers can use multiplexing techn...

Страница 37: ...ent Terminal equipment which is connected to the telecommunications network and which resides within the home or office of the customer This includes telephones modems terminals routers and television...

Страница 38: ...DS0s DS3 T3 E3 lines are not part of the PSTN DTMF Dual Tone Multi Frequency Push button or touch tone dialing E1 The European equivalent of North American T1 transmits data at 2 048 Mbps up to 32 vo...

Страница 39: ...ceive mulaw PCM voice and A law at a digital bit rate of 64 Kbps This algorithm is used for digital telephone sets on digital PBX G 723 1 A recommendation by the Telecommunication Standardization Sect...

Страница 40: ...15 2 kbps frame length 20 ms ILEC incumbent local exchange carrier The LECs that were the original carriers in the market prior to the entry of competition and therefore have the dominant position in...

Страница 41: ...and TDM separates signals by interleaving bits one after the other MUX multiplexer A device which transmits multiple signals over a single communications line or channel See multiplexing PBX private...

Страница 42: ...communications network which uses telephones to establish connections between two points Also referred to as the dial network QoS quality of service A measure of telephone service as specified by the...

Страница 43: ...ission of multiple data streams into a single high speed data stream TDM separates signals by interleaving bits one after the other telco A generic name which refers to the telephone companies through...

Страница 44: ...the PCM quasi logarithmic curve It is the 64 Kbps standard North America voice amplitude sample used for encoding decoding V volts VoIP Voice over IP Technology used for transmitting voice traffic ove...

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