RadiSys EXM-31, Hardware Reference Manual

Page 1: ...______________________________________________________ 07 0255 00 May 1995 EXM 31 14 4K Baud V 32bis Modem Hardware Reference RadiSys Corporation 15025 S W Koll Parkway Beaverton OR 97006 503 646 1800 FAX 503 646 1850 ...

Page 2: ...eference Page ii AT T is a registered trademark of American Telephone and Telegraph Inc EPC and RadiSys are registered trademarks of RadiSys Corporation May 1995 Copyright 1995 by RadiSys Corporation All rights reserved ...

Page 3: ...mory arrays or other devices may void the warranty and if the product is damaged during installation of the modifications this warranty does not cover repair or replacement This warranty in no way warrants suitability of the product for any specific application IN NO EVENT WILL RADISYS BE LIABLE FOR ANY DAMAGES INCLUDING LOST PROFITS LOST SAVINGS OR OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISIN...

Page 4: ...EXM 31 Hardware Reference Page iv NOTES ...

Page 5: ...ontrol Option dummy command 15 Dn Dial Command 15 En Off Line Echo Command 16 Fn On Line Echo Command dummy command 16 Hn Switch hook Control 17 In Identification Checksum Option 17 Ln Speaker Volume 17 Mn Speaker Control 18 Nn Select Negotiate Handshake 18 On Go On Line 18 P Enable Pulse Dialing 19 Qn Results Code Display Option 19 Sn Selects S Register 19 Sn x Writes to an S Register 19 Sn Read ...

Page 6: ...ource Option 28 Yn Select Stored Profile on Powerup 29 Zn x Stored Telephone Number 29 AT Commands 29 An Set Auto reliable Fallback Character 29 Cn Data Compression 30 Dn 108 Mode Select 30 Fn Character Framing Select 30 En Enable Disable Autoretrain 30 Gn Auto Fallback Enable V 32bis only 31 O Escape Method 31 V Command Set Switch 31 AT back slash commands 31 An Block Size 31 Bn Transmit Break 32...

Page 7: ...r Command or Dial Modifier 41 S9 Carrier Recovery Time 42 S10 Lost Carrier Hang Up Delay 42 S11 DTMF Dialing Speed 42 S12 Guard Time 42 S14 Bit Mapped Options 43 S16 Modem Test Options read only 43 S18 Modem Test Timer 44 S19 Autosync Protocol Support Mode 44 S20 Autosync Protocol Support Mode 44 S21 Bit Mapped Options 45 S22 Bit Mapped Options 45 S23 Bit Mapped Options 46 S25 Detect DTR Change 47...

Page 8: ...d 53 LSD List of Delayed Call Numbers 53 LSN List of Stored Numbers Dial Strings 54 VAL Valid 54 Result Codes 54 5 Support and Service 55 In North America 55 Technical Support 55 Bulletin Board 55 Repair Services 56 Warranty Repairs 56 Non Warranty Services 56 Arranging Service 57 Other Countries 58 Figures Figure 1 EXM Setup Screen 4 Figure 2 EXM Slot Numbering 5 Figure 3 OB1 Register 5 Figure 4 ...

Page 9: ...t When configuring with standard PC software use a classification such as Generic AT T Class 1 Fax 14400 Data Modem The EXM 31 supports the following features Data Modes CCITT V 32bis 14400 TCM 12000 TCM 7200 TCM CCITT V 32 9600 TCM 4800 QAM CCITT V 22bis 2400 QAM CCITT V 22 1200 DPSK CCITT V 21 300 FSK CCITT V 23 75 1200 FSK Bell 212A 1200 DPSK Bell 103 300 FSK Fax Modes CCITT V 17 14400 TCM 1200...

Page 10: ...lue Environmental Temperature operating 0 to 60 C see below storage 40 to 85 C Humidity operating 5 95 non condensing storage 5 95 non condensing Vibration operating 015 displacement with 2 5 g peak max acceleration over 5 to 2000 Hz storage 030 displacement with 5 g peak max acceleration over 5 to 2000 Hz Shock operating 30g 11 msec duration half sine shock pulse storage 50g 11 msec duration half...

Page 11: ... PERFORMED IN A STATIC FREE ENVIRONMENT Insertion in an EXM Carrier Insertion of the EXM 31 into an EXM carrier is straightforward Remove a blank EXM panel from the carrier by unscrewing the thumbscrews and insert the EXM 31 into the card guides Firmly press the EXM 31 front panel to ensure that the module is properly seated in the subplane and secure it with the thumbscrews DO NOT OVERTIGHTEN MAK...

Page 12: ...nu The screen display resembles the figure below ID OB1 OB2 Slot 0 DC 00 00 1 DB C1 00 2 D0 07 DD 3 DE 00 39 4 F5 05 00 5 DC F5 00 Figure 1 EXM Setup Screen The EXM Setup Screen displays the EXM configuration data in hexadecimal stored in nonvolatile memory which the EPC uses at power up to recognize and configure each installed EXM An example of configuration data for the EXM 31 is shown in bold ...

Page 13: ...by an EXM module should show an ID of FF and OB1 OB2 of 00 00 indicating that no EXM is present To add or change an EXM configuration use the cursor keys arrows to move between the fields on the screen Move the cursor to the appropriate slot entry and type in the correct value The ID for the EXM 31 should be set to D0h D zero OB1 is a hexadecimal value derived by combining the following Reserved b...

Page 14: ...ot be disabled Make sure that the IRQ chosen for the EXM 31 does not conflict with any other modules that use an IRQ Some common IRQs to avoid are the following IRQ3 if already using COM2 IRQ4 if already using COM1 IRQ6 if using floppy disk controller IRQ7 if using LPT1 OB2 is used to select the base address Reserved bit 7 Base Address Select bits 6 0 Set to 1 see below Figure 4 OB2 Register Base ...

Page 15: ...D6 It is suggested that the address range of 000 107 not be used as the base address due to possible conflicts while configuring other EXMs or AT peripherals in the system Some other common base I O address ranges to avoid are the following 1F0 1FF IDE disk controller 278 27F Parallel port LPT2 378 37F Parallel port LPT1 3F0 3F7 Floppy disk controller For example a typical OB2 setting would be DD ...

Page 16: ...EXM 31 Hardware Reference Page 8 2 2 NOTES ...

Page 17: ...d connectors equivalent to AMP 555154 2 The phone jack pinouts are identical and are defined in the following table RJ 11 Signal 1 Not used 2 Not used 3 TIP 4 Ring 5 Not used 6 Not used Table 3 RJ 11 Phone Jacks Pin out The front panel connectors of the EXM 31 are labeled IN for the line that comes in from the wall and OUT for the line that leads to the telephone ...

Page 18: ...EXM 31 Hardware Reference Page 10 3 3 NOTES ...

Page 19: ...rs for device identification and configuration The EXM 31 responds to accesses to these ports only if EXM expansion interface line EXMID is asserted An 8 bit read from I O address 100h returns the value D0 the device ID of the EXM 31 Read write configuration registers appear at I O address 102h and 103h The bit encodings are defined in chapter 2 The upper four bits of register 102 are reserved Int...

Page 20: ... Out 1 PE TERI Bit 2 Bit2 Bit10 3 Data bit 3 Data bit 3 EDSSI INT ID 2 2 DMA mode select parity enable PEN Out 2 FE DDC D Bit 3 Bit3 Bit11 4 Data bit 4 Data bit 4 0 0 resvd Even Parity Select EPS Loop BI CTS Bit 4 Bit4 Bit12 5 Data bit 5 Data bit 5 0 0 resvd Stick parity 0 THRE DSR Bit 5 Bit5 Bit13 6 Data bit 6 Data bit 6 0 FIFO enable2 RCVR Trig LSB Set break 0 TEMT RI Bit 6 Bit6 Bit14 7 Data bit...

Page 21: ...eak Interrupt THRE Transmitter Holding Register TEMT Transmitter Empty DCTS Delta Clear to Send DDSR Delta Data Set Ready TERI Trailing Edge Ring Indicator DDCD Delta Data Carrier Detect CTS Clear To Send DSR Data Set Ready RI Ring Indicator DCD Data Carrier Detect The following abbreviations are used for the registers RBR Receiver Buffer Register Read Only THR Transmitter Holding Register Write O...

Page 22: ...s stores them as the active user profile 0 into one of the two nonvolatile stored profile memory locations Other commands can be used in tandem in addition to or mixed Basic AT Commands A Repeat Last Command This command re executes last command string not to be preceded with AT or followed by pressing the Return key A Answer Command This command instructs the modem to go off hook and attempt to e...

Page 23: ... full duplex when the modem is at 9600 bits s B70 Selects V 32bis full duplex when the modem is at 12000 bits s B75 Selects V 32bis full duplex when the modem is at 14400 bits s Result Codes OK n 0 1 2 3 15 16 30 41 52 60 70 75 Error Otherwise Cn Carrier Control Option dummy command This command is used by some modems to control the transmit carrier This chip set does not support C0 and will respo...

Page 24: ...ce after dialing the number Return to idle state Modem returns to command mode after dialing a number without disconnecting the call En Off Line Echo Command This command determines whether characters are echoed to the DTE from the modem when it is in the command state E0 Echo disabled E1 Echo enabled Result codes OK n 0 1 Error Otherwise Fn On Line Echo Command dummy command This command is used ...

Page 25: ...ion This command instructs the modem to query its memory for information about itself I0 Reports product code I1 Reports a 3 digit ROM checksum I2 Performs a ROM check I3 Report ROM components I4 Modem capabilities Result Codes OK n 0 1 2 3 4 Error Otherwise Ln Speaker Volume This command determines the volume level of the speaker when supported by the modem L0 Lowest speaker volume L1 Low speaker...

Page 26: ...e enable disable N0 When originating or answering handshake only at the communication standard specified by S register 37 and Bn N1 When originating or answering start handshake only at the communication standard specified by S register 37 and Bn During handshake fallback to a lower speed may occur Result Codes OK n 0 1 Error Otherwise On Go On Line This command returns the modem to on line mode o...

Page 27: ... dial modifier is received Result Codes OK Qn Results Code Display Option This command controls whether the result codes are displayed to the DTE Q0 Result codes enabled Q1 Result codes disabled Result Codes OK n 0 1 Error Otherwise Sn Selects S Register This command selects a specific S register n 0 112 Sn x Writes to an S Register This command writes a value to a specified register n 0 112 x 0 2...

Page 28: ...es whether result codes including call progress and negotiation progress messages are displayed as numbers or words V0 Numeric form V1 Verbose form Result Codes OK n 0 1 Error Otherwise Wn Select Extended Result Codes This command determines which result codes will be used to describe the type of connection and protocol that resulted from handshaking and negotiation W0 CONNECT result code reports ...

Page 29: ...usy and dial tone detect disabled X1 Result codes 0 5 18 88 enabled Busy and dial tone detect disabled X2 Result codes 0 6 8 88 enabled Busy detect disabled and dial tone detect enabled X3 Result codes 0 5 7 88 enabled Busy detect enabled and dial tone detect disabled X4 All Result Codes 0 88 enabled Busy and dial tone detect enabled Result Codes OK n 0 1 2 3 4 Error Otherwise Yn Long Space Discon...

Page 30: ...n This command controls the modem action when the threshold set by S108 is encountered B0 Hang up if threshold reached B1 Retrain if threshold reached B2 Do not hang up and do not retrain i e tolerate any line Result Codes OK n 0 1 2 Error Otherwise Cn Data carrier Detect Option This command controls how the state of the DCD or RLSD receive line signal detect relates to the carrier from the remote...

Page 31: ...r is disabled if DTR is low D3 Reset on on to off DTR transition Result Codes OK n 0 1 2 3 Error Otherwise F Load Factory Settings This command loads the configuration stored and programmed at the factory This operation replaces all of the command options and S register settings in the active configuration with factory values stored in nonvolatile RAM F Recall factory settings as active configurat...

Page 32: ... flow control instructs the DTE to stop sending to the modem while the modem continues to send characters K0 Disable flow control K1 Reserved K2 Reserved K3 Enable bidirectional hardware flow control RTS CTS K4 Enable bidirectional XON XOFF flow control K5 Reserved Result Codes OK n 0 3 4 Error Otherwise Ln Dial Up Lease Line Option This command is used to select between dial up operations or leas...

Page 33: ...sult Codes OK n 0 1 Error Otherwise Qn Communication Mode Option This command will select the communication mode It determines how the chip set will treat transmit and receive data while in the on line state and establishes certain call setup procedures On Line State Idle State Q0 Async Normal Q1 Sync Normal Q2 Sync Dial when DTR 1 Hang up when DTR 0 Q3 Sync Talk Data DTR 0 1 Q4 AutoSync if applic...

Page 34: ...ircuit on during handshaking off in test or idle mode Result Codes OK n 0 1 Error Otherwise Tn Self Test Commands These commands are used to configure and place the modem chip set in various test modes as defined by CCITT V 54 These tests are typically used to verify the analog and digital portions of a modem s operation T0 Terminate test T1 Local analog loopback O Low frequency band A High freque...

Page 35: ...d is used to display the active and stored profiles commands and S register settings along with any stored telephone numbers The following example illustrates typical V information displayed for the AT T HSM Complete Modem Chip Set Example ACTIVE PROFILE B1 B116 B30 B41 B60 E1 L2 M1 N1 P Q0 V1 W0 X4 Y0 B1 C1 D2 G0 J0 K3 L0 P0 Q0 R0 S0 U0 X0 Y0 A013 C1 E1 G0 01 A3 C0 G0 J0 K5 N3 Q3 T000 V1 X0 J1 H3...

Page 36: ...options and S register values into one of the two nonvolatile stored profile memory locations W0 Save active configuration as user profile 0 W1 Save active configuration as user profile 1 Result Codes OK n 0 or 1 Error Otherwise Xn Synch Transmit Clock Source Option This command determines how the DTE transmit clock is generated while the modem is in synchronous modes X0 The modem generates the tr...

Page 37: ...0 1 Error Otherwise Zn x Stored Telephone Number This command is used to store up to four telephone numbers The maximum number of digits per number is 36 x 0 9 A B C D T P R W comma dial string n 0 3 AT Commands An Set Auto reliable Fallback Character This command allows the user to specify the character that tells the modem to return or fall back from auto reliable MNP mode to a normal connection...

Page 38: ...mand selects the 108 mode to user for V 25 bis 0 108 2 mode default 1 108 1 mode Fn Character Framing Select This command selects the V 25bis character framing 0 Asynchronous 1 HDLC 2 BISCYNC 0 Default En Enable Disable Autoretrain This command controls whether or not the modem will automatically monitor the line quality and request a retrain when necessary E0 Disable autoretrain E1 Enable autoret...

Page 39: ...both AT and BREAK AT V Command Set Switch This command switches from the AT command set to V 25bis when entered in V 25bis Async only AT back slash commands An Block Size This command sets the maximum block size during a MNP and LAPM connection This option forces the modem chip set to transmit smaller blocks of data This command is typically used for poor quality telephone lines where transmitting...

Page 40: ...ength in 100 ms Default 0 Break of 300 ms is transmitted Cn Set Autoreliable Buffer This command determines whether the modem chip set buffers the data it receives during link negotiation C0 Does not buffer data C1 Buffers data on answering modem for 4 seconds until 200 characters have been buffered and then switches to normal mode and the buffered characters are passed to the serial port If a SYN...

Page 41: ...he data connection between the modem chip set and the remote modem J0 Turn off feature J1 Turn on feature Result Codes OK n 0 1 Error Otherwise Kn Set Break Control This command selects the way in which the modem handles a break signal This modem chip set can handle a break signal in one of three ways expedited destructive expedited or queued break In command state if reliable mode then transmit b...

Page 42: ...eliable Mode N6 V 42 Reliable Mode N7 V 42 Autoreliable Mode Result Codes OK n 0 1 2 3 4 Error Otherwise Qn Set Serial Port Flow Control This command selects the flow control method the modem chip set provides to the DTE to prevent the modem s buffer from overflowing with data A data buffer holds the data until the modem is ready to transmit it When the data buffer is full flow control instructs t...

Page 43: ...nd V1 Enable modified MNP codes Result Codes OK n 0 1 Error Otherwise Xn Set XON XOFF Pass through This command allows or prevents the modem chip set from passing XON and XOFF characters through to the remote system X0 Process flow control characters X1 Process flow control characters and pass them through to the local or remote so they can process the characters Result Codes OK n 0 1 Error Otherw...

Page 44: ...Otherwise Kn MNP Extended Services This command determines whether a LAPM connection will be converted to an MNP connection This will occur only if AT K1 is set on both sides K0 Disables MNP extend services K1 Enables MNP extend services Result Codes OK n 0 1 Error Otherwise Qn Fallback Modulation Speeds MNP 10 This command controls whether the modem can fall back from a V 32 or V 32bis MNP reliab...

Page 45: ...s Compression Control This command controls V 42bis data compression over an error correction link H0 Disable V 42bis H1 Enable V 42bis only when transmitting data H2 Disable V 42bis only when receiving data H3 Enable V 42bis for both directions Result Codes OK n 0 1 2 Error Otherwise On n 6 256 This command selects the string size for V 42bis compression Default 16 ...

Page 46: ... Reference Page 38 4 4 Mn MNP 10 Control This command enables and disables MNP1 10 protocol for impaired or cellular control M0 Disables MNP 10 protocol M1 Enables MNP 10 protocol Result Codes OK n 0 1 Error Otherwise ...

Page 47: ...oaded into the active configuration at powerup or by the ATZn command In addition the designated default profile can be changed by entering the Yn command where n is one of the two possible user profiles All of the factory default values may be loaded at any time by entering the F command All factory defaults are for the 9 6 Data FAX 14 4 Data FAX 19 2 Data FAX 14 4 Data FAX Cell and 14 4 Data FAX...

Page 48: ...line feed Pertains to asynchronous operation only The line feed control character is output after the carriage return control character if verbose result codes are used Range 0 127 ASCII character Default 010 Line Feed Units ASCII S5 Back Space BS Character Sets the character recognized as a backspace Pertains to asynchronous operation only The modem will not recognize the Backspace character if i...

Page 49: ...o country restrictions Range 2 255 Default 002 Units seconds S7 Wait for Carrier Sets the time in seconds that the modem must wait before hanging up because a carrier is not detected The timer is started when the modem finishes dialing originate or goes off hook answer In originate mode the timer is reset upon detection of an answer tone if allowed by country restrictions This timer also specifies...

Page 50: ...r loss without causing the local modem to disconnect When register S10 is set to 255 the modem functions as if a carrier is always present The actual interval the modem waits before disconnecting is the value in register S10 minus the value in register S9 Therefore the S10 value must be greater than the S9 value or else the modem disconnects before it recognizes the carrier Range 1 255 Default 014...

Page 51: ...elected 1 V1 is selected Bit 4 Dumb Mode 0 dumb mode off normal 1 dumb mode on Bit 5 Tone T Pulse P 0 T is selected 1 P is selected Bit 6 Reserved Bit 7 Originate Answer 0 answer 1 originate S16 Modem Test Options read only Indicates the test in progress status Default 000 Bit 0 Local analog loopback 0 local ALB disabled 1 local ALB enabled T1 Bit 1 Reserved Bit 2 Local digital loopback 0 local DL...

Page 52: ...t commanded by Tn before returning to the command mode If this register value is zero the test will not automatically terminate the test must be terminated from the command mode by issuing an T0 or H command Range 0 255 seconds Default 000 S19 Autosync Protocol Support Mode Bit 1 0 Bisync protocol 1 SDLC protocol Bit 2 0 SDLC address detect disabled 1 SDLC address detect enabled Bit 3 0 NRZI bit e...

Page 53: ... 0 C0 is selected 1 C1 is selected Bit 6 DSR behavior Sn 0 S0 is selected 1 S1 is selected Bit 7 Long space disconnect Yn 0 Y0 is selected 1 Y1 is selected S22 Bit Mapped Options Indicates the status of command options Default 76h 118d 01110110b Bits 0 1 Speaker Volume Ln 00 L0 is selected 01 L1 is selected 10 L2 is selected 11 L3 is selected Bits 2 3 Speaker Control Mn 00 M0 is selected 01 M1 is ...

Page 54: ...options Default 0Fh 015d 00001111b Bit 0 Grant PDL 0 T5 is selected 1 T4 is selected Bits 3 2 1 Assumed DTE rate 000 0 600 bits s 001 600 bits s 010 1200 bits s 011 2400 bits s 100 4800 bits s 101 9600 bits s 110 19 2 Kbits s 111 38 4 Kbits s or 57 6 Kbits s Bits 5 4 Assumed DTE Parity 00 Even parity 01 space parity no parity 10 odd parity 11 mark Bits 7 6 Guard Tone Gn 00 G0 is selected 01 G1 is ...

Page 55: ...modem turns CTS ON after detecting an OFF to ON transaction on RTS when R0 is commanded Pertains to synchronous operation only Range 0 255 Default 001 Units 0 01 seconds S27 Bit Mapped Option Indicates the status of command options Default 40h 064d 01000000b Bit 3 1 0 Synchronous asynchronous selection Qn 000 Q0 is selected 001 Q1 is selected 010 Q2 is selected 011 Q3 is selected 100 Q4 is selecte...

Page 56: ...1200 bits s connection 6 Attempt a 2400 bits s connection 7 Attempt a 4800 bits s connection 8 Attempt a 7200 bits s connection 9 Attempt a 9600 bits s connection 10 Attempt a 12000 bits s connection 11 Attempt a 14400 bits s connection 12 Attempt a 16800 bits s connection 13 Attempt a 19200 bits s connection S95 Extended Result Code Bit Map Default 00h Bit 0 Verbose CONNECT result code indicates ...

Page 57: ...Medium quality 3 High quality Default 001 S109 V 32terbo Carrier Speed Selector Bit 0 Reserved Bit 1 4800 bits s Bit 2 7200 bits s Bit 3 9600 bits s Bit 4 12 0 Kbits s Bit 5 14 4 Kbits s Bit 6 16 8 Kbits s if applicable Bit 7 19 2 Kbits s if applicable S110 V 32 V 32bis V 32terbo Selector 0 V 32 enabled 1 V 32bis enabled 2 V 32bis and automatic rate renegotiation enabled 3 V 32terbo enabled 4 V 32...

Page 58: ...fault 000 V 25bis Commands Set The following commands are implemented and parameters applicable to each command are noted following the description of the command CIC Enable Autoanswer The modem will go on line in answer mode canceling any DIC command previously issued If no incoming call is present the modem will issue the invalid message CRN Dial Command The modem will go on line according to th...

Page 59: ...al according to the dial string entered in the dial string memory addressed and attempt to establish a connection 0 2 Dial string memory address DIC Disable Autoanswer The modem though configured for autoanswer will disregard the incoming call If there is no incoming call or autoanswer is not enabled the modem will issue the invalid message the command not being applicable to the subsequent incomi...

Page 60: ...d and parameters applicable to each message are noted following the description of the response CFI Call Failure Indication The modem sends this message when a call fails to connect A parameter is included to give the reason for the failure AB No dial tone or the call abort timer expired with no call progress tone detected or during handshaking after answer tone detected CB Local circuit busy phon...

Page 61: ...tempted as shown in the following example DLCn This message will be preceded by the message indicating call failure INC Incoming Call The modem will send this message when incoming ringing is detected on the line INV Invalid The modem will send this message if the command line contains a syntax error or if it is unable to execute the command LSD List of Delayed Call Numbers The modem will return t...

Page 62: ...merical character fol lowed by a CR carriage return character Phrase responses are preceded and followed by a CR LF character sequence The result codes are shown in the following table For additional result code information refer to S Register 95 Digit Code Word Code Meaning 0 OK Command line executed successfully 1 CONNECT Connection successful 2 RING Ringing signal detected 3 NO CARRIER Carrier ...

Page 63: ...be reproduced We will respond by E mail phone or FAX by the next business day Technical Support Services are designed for customers who have purchased their products from RadiSys or a sales representative If your RadiSys product is part of a piece of OEM equipment or was integrated by someone else as part of a system support will be better provided by the OEM or system vendor that did the integrat...

Page 64: ...ted that issues of serial number tracking and version control make it more convenient to receive their original products back after repair Warranty Repairs Products under warranty see warranty information in the front of this manual will have manufacturing defects repaired at no charge Products sent in for warranty repair that have no faults will be subject to a recertification charge Extended War...

Page 65: ...n of repairing their own equipment all components are available in a spares program There is a minimum billing charge associated with this program Arranging Service To schedule service for a product please call RadiSys Technical Support directly at 503 646 1800 Have the product model and serial numbers available along with a description of the problem A Technical Support representative will issue ...

Page 66: ...ontact names and phone numbers in purchasing and engineering and a description of the suspected problem Any ancillary information that might be helpful with the debugging process will be appreciated Other Countries Contact the sales organization from which you purchased your RadiSys product for service and support ...