User`s manual - Quasar & Quasar
Contents
1. Q 16 6 2 Application diagramas ooooooooooooooooooooooooooooooooooooooooocoooooooooooooooooooooo ooooo oooo 16 6 3 Hardware implementation ooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo oooo 17 6 4 Control over the failover switch oeoooooooooooooooooooooooooooooocoooooooocooooocooooocoooocoooooooco 19 7 ADAPTER TECHNICAL SPECIFICATIONS oo momo 20 8 DELIVERY E Taa amin 20 9 USEFUE LINKS aamiin 20 Ouasar M User s manual 1 Introduction Ouasar M interface board hereinafter referred to as adapter is intended for connection of El interfaces to the servers running under Asterisk soft PBX The adapter is configured as a computer board of PCI or PCI Express format The adapter is controlled by a special driver developed for the Linux OS The Quasar M adapter possesses the following features e Quantity of El channels used 1 or 2 e Hardware echo cancellation option e Failover switch of ports e Total access embedded hardware timeslots switcher with 64x64 channels matrix e DMA mode for data transfer to PC without CPU frames are optimized for Zaptel DAHDI e Automatic selection of the synchronization channel e Autmatic El sensitivity adjustment of the receiver up to 40dB for 0 port e PCI e or PCI 2 2 3V or SV variant Adapter hardware versions depending on the guantity of ports and computer interface are given in the following table2. Name Options Ouasar ME 1 El port PCI Quasar MEX 1 E1 port PCIe Quasar MEE 2 El ports PCI Quasar MEEX 2 El ports PCle Quasar ME EC 1 E1 port PCI echo canceller Quasar MEX EC Ouasar MEE EC 1 E1 port PCIe echo canceller 2 E1 ports PCI echo canceller Quasar MEEX EC 2 El ports PCIe echo canceller Quasar MEE EC FO 2 El ports PCI echo canceller failover switch Quasar MEEX EC FO 2 El ports PCIe echo canceller failover switch Ouasar M User s manual 2 Design of the adapter The adapter consists of the following functional units see the figure below FO Relay relay of the ports failover switch LIU amp Framer G 703 transceiver chip and G704 framer TDM switch El timeslots cross connector 64x64 timeslots EC module hardware echo cancellation module Watchdog a watchdog timer for failovering of the ports PCI bridge bridge chip for PCI PCIe bus DMA controller enables data transfer between the adapter and PCI bus PCI PCle Bridge Watchdog DMA controller EC TDM switch Co ad module LIU amp Framer Ouasar M User s manual 3 Installation and connection of the adapter board There are face panel of the Quasar M adapters and El ports pinout table LINK LED 1 PORT PORTO FRAME LED 0 LINK LED 0 FRAME LED 1 Port pin 1 2 3 4 5 6 7 8 Port 0 RX0 RXO TX0 TX0 Po
3. 1 9 keys to select submenu or press 0 to exit the submenu Other keys can be used to refresh status information 4 6 2 El port settings Line coding and synchronization Configuration Line code select HDB3 or AMI line code Configuration Clock source select internal synchronization master Internal or line synchronization slave line Framing parameters Configuration Framing Receive turn on off framer on receiving If off chosen the input data should be treated as raw G 703 unstructured stream Configuration Framing Xmit turn on off framing on transmitting If on then the zero timeslot will be filled with the specification G 704 synchronization marks Configuration Framing RAI control over the RAI signal The field can take the on off auto values If auto then basic frame synchronization is lost the El framer will automatically transmit the RAI alarm signal to the far end point Configuration Framing Inter National bits set National amp International bits Sa4 Sa8 Si0 Sil Multiframe parameters Configuration Multiframe CRC4 multiframe turn CRC4 on off Configuration Multiframe CAS turn on off CAS multiframe Configuration Multiframe CAS Remote CAS Alarm control over the CAS alarm signal Y bit Turn CAS alarm on off Configuration Multiframe CAS X1 X2 X3 provides manual control of X1 X3 CAS multiframe bit state Configuration Multiframe CAS ts16 ABCD 1
4. 7 Configuration Multiframe CAS ts16 ABCD 8 15 Configuration Multiframe CAS ts16 ABCD 16 23 Configuration Multiframe CAS ts16 ABCD 24 31 allows setting 4 bits of ABCD signaling for the appropriate timeslot the field is O F Status submenu Status Reset reset statistics 13 Ouasar M User s manual Test submenu Test Loopback LLOOP turns on a local loop for El port Tx Tx El port Rx Line Test Loopback RLOOP turns on a remote loop for El port Tx El port iine Rx Rx 14 Ouasar M User s manual 5 Hardware echo cancellation Echo cancellation module is available in the EC adapters The module is intended to remove the echoed signal generated by analog terminals FXO FXS when connected via El to the external PBX see the figure Adaptive EXO filter FXS Puc 1 Design of the echo cancellation module Asterisk Echo effect results from not ideal analog telephone line and and when there are significant delays in the signal transmission from one subscriber to another more than 30 ms EC module removes the echoed signal from the signal in the El gt Asterisk direction and passes unchanged signal in the Asterisk gt E1 direction Thus the remote subscriber the SIP phone on the Figure can not hear his her own signal returned The EC module possesses the following specifications e Suppression of the linear component of the echo at the 30 40 db level e Ech
5. NFIG DAHDI NET parameter 31 timeslots are used for each El port Timeslot O is responsible for the frame format it is not involved into data transmission The timeslots enumeration in the system is continuous numbers from T1 to T31 are referred to port 1 port 2 covers range from 32 to 62 and so on To switch demanded El timeslots to the network interface nethdlc keyword is used nethdlc lt S gt lt E gt where S number of the initial timeslot E number of the final timeslot For example nethdlc 2 13 For the given configuration 12 timeslots of the first port starting with 2 and ending with 13 will be configured as one data transmission channel To register timeslots a comma can be also used For example the same group of timeslots can be written as nethdlc 2 3 13 The group of timeslots described with the nethdlc enumeration forms a network interface with hdlcO name in the Linux network subsystem hdlcl corresponds to the next given command and so on The data link protocol of this interface can be configured with the help of sethdlc command For example command sethdlc hdlcO cisco specifies cisco compatible hdlc protocol on the channel For further information see sethdlc documents 11 Ouasar M User s manual 4 6 ecfg utility The ecfg utility allows adjustment of parameters of the El interfaces It can be used as a simple El analyzer The ecfg program can be used for configuration of some pa
6. Ouasar M Multi Channel Interface Board User s manual Version 1 4 04 07 2013 Novosibirsk 2007 2013 Developer and manufacturer Parabel Ltd 630090 Novosibirsk 90 P O Box 126 http www parabel ru Email info parabel ru Phone Fax 7 383 2138707 Ouasar M User s manual Attention It is not recommended to use this product on physical lines without lightning protectors and going outside one building Ouasar M User s manual Contents ANT RODU GO Na an 5 2 DESIGN OF IHE ADAPTER an san gandang 6 3 INSTALLATION AND CONNECTION OF THE ADAPTER BOARD 7 A SOP WAR Elma kana 8 At JUAN Ssciceccssvedestisdcssssavessseseuccsacaseseesdesusssisesvensencsssueces ossesssusussssevectsosevsesasedvedsspasudsssesavestesdessesusedeossssesvsecenss 8 4 2 System reguirements oooooooooooooooooooooooooooo ooooooooooooooooocooooooooo ooo coooooooo oo ooooooo 9 4 3 Driver Install AON ENAK BRK NASA cado do pesada 9 4 4 Configuration Of ET ports isciiscsesisecessessesscasseccssvsssesesecssosesassonsensseseanssobsdasassasdesasusesgeaseadcondeadssaoeassosedensdusosassenweseesoons 10 4 5 Select timeslots for data transmission oooooooooooooooooooooooooooocoooocooooooocoooocooooocoooocooooooooco 11 40 C CLE Utiliky eR 12 5 HARDWARE ECHO CANCELLATION o oo oom 15 6 FAILOVER aa aa wk d i kmi 16 6 1 Introduction RR
7. ation Switching of the ports is executed via the relay contacts directly on the El sockets If the relay is switched off emergency mode the Tx line of the socket O falls on the Rx line of the socket 1 and vice versa If the relay is switched on operation mode every port is connected to its own socket A watchdog timer controls the relay overflow time is 40 seconds At timer overrun the relay switches to the emergency mode Thus software must every 30 seconds send requests to the adapter driver to enable support of the operation mode thereby resetting the watchdog timer to 0 If the failover switch function is not required then the watchdog timer can be prohibited by setting the jumper on the J3 connector see the figure 17 Ouasar M User s manual Jumper 6 8 failover switch is on Jumper 8 10 failover switch is off Table containing the failover switch states Jumper Condition No power Server Watchdog timer Watchdog hardware reset overrun timer rest Jumper J3 A P P P 6 8 Jumper J3 A A A P 8 10 A emergency mode the ports are switched to each other P operation mode 18 Ouasar M User s manual 6 4 Control over the failover switch If the watchdog timer is switched on by the J3 jumper then the application software must periodically every 30 seconds reset it by reading the special file cat sys class guasar guasar0 wdog Below the example of the s
8. cript is given The script cyclically reguests availability of the 192 168 1 12 server by the SIP protocol If the server is available then the watchdog timer will be reset thus the fail over switch remains operational bin sh WDOGPATH sys class quasar quasar0 wdog test t WDOGPATH Il exit 1 while do sipsak T H 192 168 1 12 s sip user 192 168 1 12 STATUS if SSTATUS 0 then cat WDOGPATH echo Resetting watch dog fi sleep 30 done 19 Ouasar M User s manual 7 Adapter technical specifications Parameter Description Connector type RJ45 8 contacts Cable type symmetrical twisted pair 120 ohm Nominal pulse voltage 3 V 4 10 Data transmission rate 2048 kbit s 50 ppm Coding AMI HDB3 Signal attenuation no more than Conformance to standards 40 db for port O 6 db for port 1 ITU T G 703 G 704 G 706 G 732 G 823 Pulse form ITU G 703 Range of phase jitter ITU G 823 Frame structure ITU G 704 Control PCI3v or 5v PCI express Dimensions 130 x 70 x 20 mm Operation conditions Air temperature from 5 to 50 C Relative humidity up to 8096 at 25 C 8 Delivery set e Adapter board e CD with driver and user s manual e Guarantee card e Package box dimensions 26x17x3 cm Weight is less than 0 5 kg 9 Useful links http www asterisk org downloads 20 Revisions 1 4 EC FO options
9. o cancellation depth is 32 ms e Automatic shut off of EC when fax modem signals are detected Usage of the Quasar M models with built in echo canceller significantly reduces the computational load on the server with Asterisk Software echo cancellation in Asterisk must be switched off by configuration of parameters in the etc asterisk chan dahdi conf file echocancel no echocancelwhenbridged no echotraining no Hardware based echo canceller is enabled by default at loading of the quasar ko module without a parameter Its mandatory shutdown is possible when the noec 1 parameter is specified to the module 15 Ouasar M User s manual 6 Failover switch 6 1 Introduction Failover switch is available for the FO adapters If there are two ports on the adapter and under particular conditions these ports can be copper connected to each other The conditions can be as follows server power off software crash unavailability of an external host In these cases switching the ports at each other allows a backup communication scheme using the bypass route Thus the failover switch allows building of highly reliable communication infrastructure 6 2 Application diagrams Two possible application diagrams of the Quasar M adapter with the failover switch function Note that these schemes can be realized using simple scripts no specialized software is required Asterisk server M Quasar SIP On the fi
10. rameters which are not subject to the DAHDI configuration utilities The utility uses a dev quasar special file for interfacing the driver The prevous paramters adjusted by DAHDI are easily overridden with the utility The utility runs independently and does not update data in the DAHDI structures 4 6 1 Main menu The ecfg utility is launched in the Linux command string with the following parameters ecfg b M i N Where M board number 0 1 N El port number O or 1 El parameters are configured by means of modifying the parameters in hierarchical menus When configuration completed the settings can be kept in a file Configuration is saved in the etc ecfg guasarM N cfg file where M and N numbers of the board and port When ecfg is launched the main menu will be displayed on the screen containing information on software version board and port numbers status of the given El port Quasar M monitor v 1 14 26 08 2008 Updates http parabel ru PMC chan 0 0 conf file etc ecfg guasar0 O cfg HW FW REV version 10 10 e driver verision 2 0 3 Line status LOS On AIS Off Frame status LOF On Sa4 8 00000 RAIS Off CAS Multiframe CAS LOM Off XYXX 0000 CRC4 Multiframe CRC4 err Off LOC On E bit On Err counters HDB3 0 FAS 0 CRC4 0 ABCD status 00000000 00000000 00000000 00000000 1 Configuration gt gt 2 Status gt gt 3 Test gt gt 0 Quit 12 Ouasar M User s manual Press
11. rst diagram the subscribers Phonel Phone2 Phone3 are connected to the private automatic branch exchange PBX As per normal they can be connected through the O port to the public telephone network port by the Quasar adapter and port 1 and to SIP At that the subscribers have access to all Asterisk services IVR Voice mail conferences If power of the server is off or software hangs up the adapter ports will be switched to each other directly connecting the PBX to the public telephone network Thus in emergency the subscribers will be provided with telephone communication 16 Ouasar M User s manual Asterisk Server 1 SIP Asterisk Server 2 q On the second diagram the Server 2 is a backup server Port O on it is closed by default to the Port 1 thus enabling connection of the main Server 1 to the phone network PSTN Asterisk configuration of both servers is similar The servers are connected to one SIP network through the switch The server 2 periodically tests connectivity to the Server 1 ping If connection misses then the Server 2 disconnects the Port 0 and configures the same IP address as the IP address of the Server 1 and then it starts to terminate calls instead of the main server A simple utility ping as well as specialized utilities such as sipsak can be used to test connectivity It allows checking the operability of the main server at the most important application level 6 3 Hardware implement
12. rt 1 RX14 RXI TX14 TXI Notes 1 RX receiver input TX transmitter output 2 Port 1 is absent for I channel configuration Type of the connector used is RJ 45 1 8 nmn LINK LED El signal existence indicator FRAME LED El frame synchronization existence indicator The adapter is installed into a standard PCI PCI express slot A low profile card MEX LP item for installation into 2U servers can be ordered separately Ouasar M User s manual 4 Software 4 1 Introduction The adapter operation depends on the following software components 1 DAHDI package earlier Zaptel This component provides low level procedures with telephone equipment Supply of the DAHDI package with the adapter is not obligatory so the download from the public Internet resources is acceptable see Useful links at the end of the Manual The compatibility with the original DAHDI package is guaranteed no patches needed 2 Ouasar ko driver It is a logical part of the DAHDI package This component provides adapter specific functions The driver is supplied in the source code presentation The driver must be compiled before loading into a system The corresponding software should be available on the server to do it 3 The etc dahdi system conf configuration file Parameters of the El ports and selected timeslots are specified in the file The file is modified by a user with the help of any text editor installed in the
13. stem recognizes the adapter then the driver will be successfully loaded The list of the loaded modules Ismod utility confirms the successful load The quasar module must be presented in the list The module as well reports on successful load in the var log messages log Ouasar M User s manual 4 4 Configuration of El ports El ports of the adapter are described in the etc dahdi system conf configuration file The span key word defines parameters of the given port span span num gt lt timing gt lt LBO gt lt framing gt lt coding gt crc4 where span num El port number from 1 to the maximum port number in the board timing should the port be used as a synchronization source O port is El master 1 and more El slave port The port is among the adapter synchronizing sources The greater the number the less the port priority is LBO ignored parameter set 0 Framing telephony signaling acceptable values are ccs cas Coding line coding acceptable values are ami or hdb3 Crc4 allow crc4 verification and generation an optional parameter 10 Ouasar M User s manual 4 5 Select timeslots for data transmission The Ouasar M adapter can be used not only for voice communication link but for El data transmission Both the functions can be exercised with different channels but on one board Note the DAHDI package should be compiled with HDLC subsystem support This is determined with CO
14. system Configuration file syntax is out of scope of this document Nevertheless the commands relative to the adapter configuration are presented here 4 The dahdi cfg configuration utility The utility based on the configuration file transmits some parameters to the driver After any changes in the configuration file the utility should be restarted Ouasar M User s manual 4 2 System reguirements Before the driver installation the following software must be installed in the system e binutils make and gcc compiler e Kernel header files e DAHDI package in source codes Learn DAHDI and Asterisk documentation before installation and operation of the driver 4 3 Driver installation The driver is packed in the Quasar driver quasar x x x tar bz2 tar archive located on the CD included into the delivery set Drivers of the 3 0 0 version and later work with the DAHDI package As every version has its own requirements for driver installation a user should strictly follow the instructions of README file packed in the same archive The final step of the driver compilation is loading quasar ko module on a system Before loading it in the system please ensure the adapter is successfully recognized by the Linux PCI subsystem To check it run the Ispci utility After utility start the list of PCI devices will appear on the screen The following device must be in the list Network controller Altera Corporation Device 2230 If the sy
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