DM991 SERIES V DM991C DM991CE DM991S DM991SE PRODUCT MANUAL 204.4092.08 rev.
WARRANTY This product is guaranteed to be free against manufacturing and raw material defects, during the period specified in the sales receipt. The warranty includes only the repair and replacement of components or defective parts, free of charge.
CONTACTS In order to contact the DATACOM technical support, or sales department: Support • • o E-mail: suporte@datacom.ind.br o Phone: +55 51 3358-0122 o Fax: +55 51 3358-0101 Sales o E-mail: comercial@datacom.ind.br o Phone: +55 51 3358-0100 o Fax: +55 51 3358-0101 Internet o • www.datacom.ind.br Address o DATACOM o Av.
CONVENTIONS In order to improve the agreement, the following conventions are made throughout this manual: hyperlink - Indicates an internet site or an e-mail address. Command or Button - Always that some reference to a command, a button or a software menu is made, this indication will be in italic. # Commands and messages from terminal screens are presented in notformatted text, preceded from #. Notes give an explanation about some topic in the foregoing paragraph.
INDEX 1. GENERAL RECOMMENDATION.................................................10 2. INTRODUCTION..........................................................................11 2.1. DM991S/SE 2W/4W............................................................................................. 11 2.1.1. Front Panel .................................................................................................................................. 11 2.1.2. Back Panel .................................................
8.5. Timeslot 16 Enabling (DIP B2) ............................................................................. 34 8.6. CRC4 Enabling (DIP B3) ...................................................................................... 34 8.7. E1/Digital interface selection (DIP B4).................................................................. 34 8.8. Terminal type (DIP B5)......................................................................................... 35 8.9. Configuration (DIP B6) ................
13. CONVERTER MODE TESTS.......................................................65 13.1. Local Analogue Loopback - LAL........................................................................ 65 13.2. Local Digital Loopback Test - LDL...................................................................... 65 14. FIRMWARE DOWNLOAD............................................................67 15. INSTALLATION AND OPERATION .............................................68 15.1. Installation .......................
FIGURE INDEX Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Figure 30. Figure 31. Figure 32. Figure 33. Figure 34. Figure 35. Figure 36. Figure 37. Figure 38. Front Panel - DM991S 2W .................................................................
TABLE INDEX Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Table 13. Table 14. Table 15. Table 16. Table 17. Table 18. Table 19. Table 20. Table 21. Table 22. Table 23. Table 24. Table 25. DM991S/SE - DB9 Connector Pinout ...................................................... 12 DM991SE - RJ45 Connector Pinout ........................................................ 12 DM991C/CE - DB9 Connector Pinout ..........................................
1. GENERAL RECOMMENDATION Before the installation, read the entire manual attentively. Always observe the instructions of security during the installation, operation or maintenance of this product. Installation, adjustment or maintenance must be carried through only by qualified, trained and authorized people. The installation of any electric equipment must be in accordance with the current law in the place where this equipment will be installed.
2. INTRODUCTION The modem family DM991 series V has several G.SHDSL modem models, with E1 (G.703 and G.704), Digital (V.35 and V.36/V.11) and Ethernet (10/100BaseT) interfaces. They come in eight models: • DM991C 2W – Desktop. Can be adapted in a sub rack, using the accessory: desktop subrack adaptor. Its G.shdsl interface works on 2 wires. • DM991C 4W – Desktop. Can be adapted in a sub rack, using the accessory: desktop subrack adaptor. Its G.shdsl interface may operate with 2 or 4 wires.
Figure 2. Figure 3. Figure 4. Front Panel - DM991SE 2W Front Panel - DM991S 4W Front Panel - DM991SE 4W • Signaling LEDs –The meaning of each LED can be found on Table 22. • DB9 - The DB9 connector in the front panel is used to configure the equipment via terminal (communication serial port). The connector pinout is found on Table 1. Signal Transmission RS-232 Reception RS-232 Ground signal Table 1. • DM991S/SE - DB9 Connector Pinout RJ45 - The RJ45 connector is used for the Ethernet interface.
• Both TX pind are used for port A in the DSL interface. Both RX pins are used for port B in the DSL interface (for model 4W only). More details are provided in the Table 5. • Dial Backup pins are used for the E1 interface. Pins A and B are for interface input (IN) and pins C and D are for interface output (OUT). More details are provided in the Table 12. 2.2. DM991C/CE 2W/4W 2.2.1.
• Signaling LEDs –The meaning of each LED can be found on Table 23. • DB9 - The DB9 connector in the front panel is used to configure the equipment via terminal (communication serial port). The connector pinout is found on Table 3. Signal Transmission RS-232 Reception RS-232 Ground signal Table 3. • DB9 Orign 2 DM991C/CE 3 ETD 5 - DM991C/CE - DB9 Connector Pinout RJ45 - The RJ45 connector is used as Ethernet interface. Its pinout description is found on Table 4.
3. G.SHDSL INTERFACE The DM991S/SE modem G.shdsl interface presents connection through the screw connector block, as seen in Table 5. The DM991C/CE modem G.shdsl interface presents connection through an RJ45 with pinout as shown in Table 6. Signal TIP RING TIP RING Table 5. screw connector block TX -1 TX -2 RX -1 RX -2 Port A B* DM991S/SE - G.shdsl Interface Pinout * Only 4W modem Signal TIP RING TIP . RING Table 6. Pin (RJ45) 4 5 3 6 Port A B* DM991C/CE - G.
The cabinets destined to the DM991S/SE models usually have primary protection devices, so these models do not come with additional sparklers. 3.1. Interface Characteristics ITU-T Recommendation G.991.2 describes a transmission method for data transport telecommunication access networks over twisted pairs in the full-duplex mode, with echo canceling. in The interface operate in lines of type 135ohms balanced. The line coding is 16-level TC-PAM type (16-TCPAM).
In the activation stage, the DSL interface LED blinks once a second (on and off times are equal). 3.4. Data Mode This is the final stage, where the modem transmits data normally. It will use the final G.shdsl frame, sending information as negotiated during handshake and using the coefficients that were calculated after the transmission line was evaluated during the training period. Whenever the interface is in sync, the DSL status LED will remain on. 3.4.1. G.shdsl Frame Structure The G.
Bit 1-14 15 16 17 -> k+16 K + 17 K + 18 K + 19 K + 20 K + 21 K + 22 K + 23 K + 24 K + 25 K + 26 k + 27 -> 2k + 26 2k + 27 2k + 28 2k + 29 2k + 30 2k + 31 2k + 32 2k + 33 2k + 34 2k + 35 2k + 36 2k + 37 -> 3k + 36 3k + 37 3k + 38 3k + 39 3k + 40 3k + 41 3k + 42 3k + 43 3k + 44 3k + 45 3k + 46 3k + 47 -> 4k + 46 4k + 47 4k + 48 4k + 49 Name sw1-sw14 fbit1/losd fbit2/sega b1 eoc01 eoc02 eoc03 eoc04 crc1 crc2 fbit3/ps sbid1 eoc05 eoc06 b2 eoc07 eoc08 eoc09 eoc10 crc3 crc4 fbit4/segd eoc11 eoc12 sbid2 b3 eoc13
3.4.4. SNR Margin Defect An SNR margin defect occurs when the signal-to-noise ratio falls below the specified margin, i.e., when the signal quality is too poor. The standard signal-to-noise ratio for the DM991 G.shdsl interface is 6 dB. 3.4.5. LOSW Defect An LOSW (Loss of Sync Word Defect) defect shall be declared when at least three consecutive received frames contain one or more errors in the framing bits.
When set up in synchronous mode, the line clock becomes the same as the data clock. The precision of such clock gets to be, thus, the same as the precision of the clock that is selected as the equipment synchronization clock. Recommendation G.991.
[m] 8000 7000 6000 5000 4000 3000 2000 1000 0 192 256 384 512 768 1024 1536 2048 2304 [kbit/s] Figure 13. G.shdsl Interface Reach (m X kbit/s) 3.7. Four wire operation (4W) The 4W modems presents two G.shdsl ports, these modems can operate in two ways. 3.7.1. Operating on two wires When this modem is operating on 2 wires the data will be transmitted simultaneously on lines A and B, adopting (1+1) protection system.
4. V.35-V36/V.11 DIGITAL INTERFACE The DB25 connector follows the ISO2110 Amd. 1 recommended pinout, for the V.35 interface as well as for the V.36/V.11. In the DM991S/SE modems, that pinout can be altered to the Telebrás standard through the straps. Interface V.35 In the case of DM991S/SE modems, that pinning can be changed to the Telebrás standard through straps. In the case of DM991C/CE modems, you have the option of asking for equipment with a pinning selections between ISO2110 Amd.
DB25 CT Function Signal ISO 2110 Amd. 1 101 Protection ground 102 Signal ground 103 Transmitted data 104 Received data 105 106 107 108 109‡ Request to send Ready to send Modem ready Terminal ready G.SHDSL interface synch 113 DTE transmission clock 114 Transmission clock 115 Reception clock 128 External reception clock 140 Digital Remote Loopback Request 141 Local Analogue Loopback request 142 Test indicator Table 10. P. Gnd S.
DB25 CT Function Signal ISO 2110 Amd. 1 101 Protection ground 102 Signal ground 103 Transmitted data 104 Received data 105 Request to send 106 Ready to send 107 Modem ready 108 Terminal ready 109‡ G.SHDSL interface synch 113 DTE transmission clock 114 Transmission clock 115 Reception clock 128 External reception clock 140 Digital Remote Loopback Request 141 Local Analogue Loopback request 142 Test indicator Table 11. P. Gnd S.
5. G.703 - G.704 INTERFACE The interface allows usage of coaxial cable (75ohms) or for twisted pairs (120ohms). The cables are attached through transformers, so there is no polarity for the twisted pair. 5.1. DM991S/SE There are straps which allow connecting the external net of the coaxial cable to the ground cable. This works either for the input channel (RX-IN) as for the output channel (TX-OUT). When using twisted pair (120ohms), make sure the straps are not in the ground position.
Function Received data Received data Transmitted data Transmitted data Table 14. Signal DB25 OUT core 21 OUT shield 14 IN core 18 IN shield 25 Signal Source DM991 DM991 E1 Network E1 Network DM991S/SE - G.703 Proprietary Pinout (DB25) 5.2. DM991C/CE There are straps that allow you to connect the external coaxial cable network to the ground. On models DM991C/CE with PCI rev. 04 or higher, this applies both to the input channel (RX-IN) and to the output channel (TX-OUT). On models DM991C/CE with PCI rev.
6. ETHERNET INTERFACE The DM991SE and DM991CE Ethernet interfaces allow interconnecting two LANs thru G.shdsl aggregated. It can be configured to Nx64kbit/s speed, to the aggregate configured limit. This tributary can be used joined with other modem tributaries. Accepts packets of up to 1552 bytes, supporting VLAN. 6.1. Ethernet physical level The DM991CE and DM991SE converters Ethernet interface is 10/100BaseT, according to the IEEE 802.3 specification.
• Link Speed – it is possible operation velocity on the interface at 100Mbits/s or 10Mbits/s; • Flow control - allows enabling flow control on the interface. Should it be operating on Full Duplex mode, pause frames will be used.
7. STRAPS The DM991S/SE modems present substantial differences in relation to the DM991C/CE modems as to the configurations done through strapping, in such a way that the sub chapter 7.1 verses on the DM991S/SE modems strapping and sub-chapter 7.2 verse on the DM991C/CE modems strapping. 7.1. DM991S/SE 7.1.1. G.703 Interface Cable Selection (E4) Position 120: Selects the use of twisted pair, meaning it operates on the G.703 interface with 120ohms impedance.
(G.703) Telebrás Standard – In this option the equipment presents the G.703 interface in the TX and RX pins of the DB25, according to the Telebrás practice 225-540-780. The digital interface will not be used once it occupies some of its most important pins. E12 to E15: position 0-1. E27 to E30: position 0-1. E44 to E47: position 0-2. V.35 and G.703 in DB25 (G+V) – In this option, the equipment presents the G.
Be careful as not to let those straps be in the grounded position when a twisted pair (120ohms) is used. This strap is available only on equipment with PCI rev. 04 or higher. 7.2.4. Digital Interface Selection (E10, E12 and E13) Define if the electrical characteristics of the digital interface will be according to the V.35 or V.36/V.11 recommendation. Position V.35: V.35 interface- factory standard. Position V.11: V.36/V.11 interface. 7.2.5.
8. DIP-SWITCHES Only the DM991S/SE modems have DIP-switches, however, these equipments, as well as the DM991C/CE modems can also be configured via terminal. 8.1. Speed Selection (DIPs A1 to A5) DIPs A1 to A5 select the transmission rate in the line and in the enabled tributary interface. If the modem is configured as NTU (DIP B5 on OFF), DIPs A1 to A5 will determine only the rate of the tributary interface, the line rate being defined by the LTU configuration.
A1 OFF OFF OFF OFF* OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF OFF ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON ON A2 A3 A4 A5 OFF OFF OFF OFF* OFF OFF OFF OFF ON ON ON ON ON ON ON ON OFF OFF OFF OFF OFF OFF OFF OFF ON ON ON ON ON ON ON ON OFF OFF OFF OFF* ON ON ON ON OFF OFF OFF OFF ON ON ON ON OFF OFF OFF OFF ON ON ON ON OFF OFF OFF OFF ON ON ON ON OFF OFF ON ON* OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF OFF ON ON OFF ON OFF ON* OFF ON OFF ON OFF ON O
The external clock is provided by the DTE through the CT113 in the digital interface or recovered through the G.703 signal, depending on which interface is enabled. The DTE should provide it with ±50ppm precision for connection in plesiochronous mode and ±32ppm for connection in synchronous (to operate according to the G.991.2 rule).
8.8. Terminal type (DIP B5) When ON, configures the modem as STU-C or LTU. When OFF, configures the modem as STU-R or NTU. When the modem is configured as NTU, DIPs A1-A5 determines the transmission rate of the interface selected by B4. When the modem is configured in LTU, the frame mode is plesiochronous and the annex is automatic (in relation to the DIP-switches configuration). If other frame mode or annex is wished, it is necessary to do the configuration through the terminal.
8.12. DIPs Summary DIP Function A1 to A5 Speed selection A6/A7 A8 B1 << Transmissio clock LDR request Cross-Connect CAS B1<< Timeslot 16 B3<< CRC4 B4† Interface B5 Terminal type B6 Configuration Ethernet◊ B7 ◊ Converter Mode# B8▼ 4W Operation Table 18. OPERATION Table Internal External Regenerated External RX Accepts Does not accept Enabled Disabled Enabled Disabled Enabled DIsabled V.35 G.
9. OPERATION DESCRIPTION The equipment works completely autonomous, meaning once it has been configured it does not need external intervention; as well as if it is initialized it goes automatically into operation according with the configuration saved on the (E2PROM) memory, without needing any special initializing procedure. The interfaces statuses are indicated by (LEDs) and automatically go back into normal operation when any malfunctioning status is corrected. 9.1.
• Regenerated from the E1 interface - Is provided by the DTE through the G.703 signal of the E1 interface. • Regenerated from the digital interface - Is provided by the DTE through the CT113 signal. The digital interface must have the clock configured as external (CT113) or CT104 sinc. CT113. Whichever the configuration, the clock used for the transmission should have at least ±50ppm precision for connection in plesiochronous mode and ±32ppm for connection in synchronous (to operate according to the G.
The scheme is very similar to the ones already showed. The external clock coming form the V.35 in the LTU equipment is passed to the DSL interface, which in its turn is passed to the E1 and digital interfaces of the NTU equipment. The same happens the other way around (clock coming from the V.35 in the NTU passes trough the DSL interface and goes to the E1 and digital interfaces in the LTU). Figure 17. Digital interface External Clocks in Plesiochronous Mode 9.2.3.
Figure 19 shows how a digital interface configured as external works when a DM991, with regenerated clock from the DSL, is connected to an ECD equipment. The traced arrow indicates that the CT115 derives from the DSL interface regenerated clock. The doted arrow indicates that the equipment uses as transmission clock (CT114) the clock provided by the ECD through the CT113. Figure 19. Digital Interface Operating with External 9.3.3. CT104 sinc.
Figure 21. Digital Interface with CT113 Unlooped to CT114 9.3.5. CT128 Enabled External reception clock provided by the DTE. When enabled, substitutes the CT115, which stops being used (although it still exists). When the equipment connected to the DM991 does not generate the CT128, this option should be disabled. In this case the CT115 will be used as reception clock. 9.3.6. Invert Tx Clock When enabled, this option inverts the equipment’s transmission clock signal phase (CT114).
10. TERMINAL MANAGEMENT The DM991 family modems can be configured through a VT100 terminal (or an emulator of a PC Terminal such as the Windows HyperTerminal) connected to the Terminal port in the front panel. The Terminal should be configured for 9600bit/s without flow control, 1 stop bit and without parity bit. When configured with Windows2000, it is recommended not to use the HyperTerminal, for it presents some problems working on this platform.
• R - Exit and reset: The “Exit and reset” option finalizes the terminal access and restarts the equipment. In the DM991S/SE equipments it is necessary to use the option "E" and wait 10 minutes so the Telebrás management goes back on. 10.1. Equipment Information # # # # # # # # # # # # # # # # # # # # # # # # -------------------------------------------------------------------------D A T A C O M DM991C - G.SHDSL Modem - E1 and V.
10.2. Password Configuration # # # # # # # # # # # # # # # # # # # # # # # # -------------------------------------------------------------------------D A T A C O M DM991C - G.SHDSL Modem - E1 and V.
10.4. Choosing Equipment to be Configured # # # # # # # # # # # # # # # # # # # # # # # # # -------------------------------------------------------------------------D A T A C O M DM991C - G.SHDSL Modem - E1 and V.35 Interfaces -------------------------------------------------------------------------Choose Equipment *1 - DM991C - G.SHDSL Modem - E1 and V.
• F - Firmware download for both local and remote equipment: allows the firmware download to be done, for future upgrades. The download can be for either the local as for the remote modem. 10.5. Configuration Menu In this configuration menu the user has access to all information of the equipment. All configurations made in the sub-menus of this equipment are saved in a user memory, which will need to be activated in order for the equipment to be configured in the desired manner.
# # # # # # # # # # # # # # # # # # # # # # # # -------------------------------------------------------------------------D A T A C O M [ 1 ] DM991CE - G.SHDSL Modem With Ethernet Bridge -------------------------------------------------------------------------Configuration Menu G D V E B - General configuration G.SHDSL interface V.
• 7 - Visualize activation LOG: This option presents a LOG containing the errors when partially invalid or invalid configurations try to be activated. 10.5.1. Equipment General Configurations Menu On this menu, pressing TAB will change the value of the object to be configured. Press ENTER to exit this menu and save the changes in the user memory, and ESC to exit and cancel the changes.
10.5.2. G.shdsl Interface Configuration Menu # # # # # # # # # # # # # # # # # # # # # # # # -------------------------------------------------------------------------D A T A C O M [ 1 ] DM991C - G.SHDSL Modem - E1 and V.35 Interfaces -------------------------------------------------------------------------G.
10.5.3. Digital Interface Configuration Menu # # # # # # # # # # # # # # # # # # # # # # # # -------------------------------------------------------------------------D A T A C O M [ 1 ] DM991C - G.SHDSL Modem - E1 and V.35 Interfaces -------------------------------------------------------------------------V.
• CT103 filtering: enables the filtering of type of information received in digital interface. It has effect only on status information, not on the data received in digital interface. Available in FW version 110. 10.5.4. E1 Interface Configuration Menu # # # # # # # # # # # # # # # # # # # # # # # # -------------------------------------------------------------------------D A T A C O M [ 1 ] DM991C - G.SHDSL Modem - E1 and V.
o Drop insert: insert: this configuration makes the received unused timeslots to be retransmitted, enabling the drop insert of several equipments in the same E1 link; o Idle: this configuration retransmits the user configured value in the “Idle byte” parameter, in each unused timeslot. 10.5.5.
# # # # # # # # # # # # # # # # # # # # # # # # -------------------------------------------------------------------------D A T A C O M [ 1 ] DM991C - G.SHDSL Modem - E1 and V.35 Interfaces -------------------------------------------------------------------------Tests Menu D - G.SHDSL interface V - V.
10.6.1. G.shdsl Interface Test Menu # # # # # # # # # # # # # # # # # # # # # # # # -------------------------------------------------------------------------D A T A C O M [ 1 ] DM991C - G.SHDSL Modem - E1 and V.35 Interfaces -------------------------------------------------------------------------G.
10.6.3. E1 Interface Test Menu # # # # # # # # # # # # # # # # # # # # # # # # -------------------------------------------------------------------------D A T A C O M [ 1 ] DM991C - G.SHDSL Modem - E1 and V.
10.7.1. Equipment Status Menu # # # # # # # # # # # # # # # # # # # # # # # # -------------------------------------------------------------------------D A T A C O M [ 1 ] DM991C - G.SHDSL Modem - E1 and V.35 Interfaces -------------------------------------------------------------------------Equipment Status Current test Device 2048 clock source Up time Number of after factory resets :[ :[ :[ :[ No active tests Internal (regen.
o Handshake; o Non-aligned TDM (only for model 4W operating with 4 wire o Training; o LOSW Defect; o LOSW Flaw; o No CRC synch; o No CAS synch. • Loop attenuation: shows the status of the Loop Attenuation Defect. • SNR margin: shows the status of the Signal-Noise Relation Defect. • Data rate: indicates the interface transmission rate (number of channels) negotiated during the handshake.
• CT108 (DTR): indicates if the CT108 signal is active or not. If configured to be ignored “Forced ON” will show. • CT109 (DCD): if active indicates that the aggregate is operating properly and the data received is valid (CT104). • CT113 (XTC): in case the CT113 is enabled, indicates it is operating on the configured frequency. “Ignored” means disabled, “On” means operating properly and “Off” means not operating properly.
10.7.5. Bridge Interface Status Menu # # # # # # # # # # # # # # # # # # # # # # # # -------------------------------------------------------------------------D A T A C O M [ 1 ] DM991CE - G.
• LOSW Seconds (LOSWS): counter of 1 second intervals during which one or more LOSW defects happen. • Unavailable Seconds (UAS): counter of 1 second intervals during which the G.shdsl line is unavailable. The line is considered unavailable after 10 continuous seconds of SES. Once unavailable, the line will become available after 10 continuous seconds without SES. • Loop attenuation (dB): indicates the loop attenuation in dB.
11. REMOTE MANAGEMENT The DM991 modems can be remotely managed, or they can remotely manage other equipments. Using the local terminal with the management link of the G.shdsl aggregate, the equipment can manage a DM991S/SE or a DM991C/CE remote or it can be managed by a remote equipment (a DM991S/SE, a DM991CE or a DM705). DM991S/SE models can also be managed through the DATACOM management card for Telebrás sub racks, DMG20.
12. TESTS The tests in the DSL interface can be executed via management, through the keys in the frontal panel (LAL, LDL and LDR, only for DM991S/SE models), or through the CT140 (LDR) and CT141 (LAL) signals, coming from the digital interface. Remember that signals CT140 and CT141 should be set up as controlled in the digital interface, so that testing can be enabled. LDR reception can be enabled by the management as well as by DIP A8 (only for DM991S/SE models).
Figure 25. DM991 - BERT Test on G.shdsl Interface The BERT of DM991 modems is generated with exact rate of line (minimum 192Kbit/s), except the timeslot used for CAS, in which is sent mark (all bits equal 1). It is different of interfaces DM705 DSL1/DSL2/DSL8 where BERT is sent in accordance with the number of channels configured for the interface (minimum 64kbit/s). 12.1.4. RDL Test This test facilitates the verification of the link status and of the two data directions.
Figure 28. DM991 - LAL Test on E1 Interface 12.3. Digital Interface Tests 12.3.1. LDL Test This test helps the verification of the internal and external data link status. Two loopbacks are done. The internal loopback makes the data coming from the G.shdsl interface to be retransmitted. The external loopback makes the external data coming from the digital interface to return to it. During LDL testing the data in the digital interface remains in sync with the clocks configured for regular operation.
13. CONVERTER MODE TESTS The Converter Mode is only available on equipments DM991S and DM991C. Tests can be activated by the terminal/management, by CT141, or even by keys (only in DM991S). Remember that signal CT141 must be set up as controlled in the digital interface, so that testing can be enabled. 13.1.
Figure 31. LDL Test Converter Mode Product Manual - DM991 Series V Family - 204.4092.
14. FIRMWARE DOWNLOAD Equipments go through constant upgrades, in which new facilitators are installed. To use them, it is necessary that the equipment firmware is modified. This is done by downloading a new firmware. To download, the user must have available in his/hers computer the file with the new firmware (which can be obtained on the DATACOM web site: www.datacom.ind.br The file has an “.im” extension.
15. INSTALLATION AND OPERATION Always observe the instructions of security during the installation, operation or maintenance of this product. Installation, adjustment or maintenance must be carried through only by qualified, trained and authorized people. Before connecting any cable to the equipment, make sure that the grounding system is functional. To prevent risks of electric shock, before opening the DM991C/CE equipments, disconnect the power supply.
There must be no voltage difference between the DM991 DB9 pin 5 (signal ground) and the PC DB9 pin 5 (or DB25 pin 7). This can cause damage the DM991 and PC serial interfaces. To be sure to avoid this, use an AC voltmeter to measure the voltage between these pins. If there is voltage difference, check if the modem and the PC are properly grounded. It is not necessary to turn the equipment off to plug in the serial cable, if the above conditions are met. • Digital interface pins (V.35 - V.
16. G.703 - G.704 Here are described the structures defined by the G.704 recommendation. Note that a G.703 signal at 2048kbits/s with an according frame structure with the G.704 is also called E1 signal. 16.1. G.704 Frame structure The interface operates at a nominal speed of 2048kbit/s, with bits grouped in frames. Each frame is made of 256bits, arranged in 32 timeslots, each of 8 bits. The frame repetition rate is 8000 times per second, resulting in a 64kbit/s rate for each timeslot.
Alterned frames Bit number 4 5 Si 0 0 1 1 Note 1 Frame alignment signal Si 1 A Sa4 Sa5 Note 1 Note 2 Note 3 1 Frame containing the Frame Alignment Signal 2 3 6 0 7 1 8 1 Sa6 Sa7 Sa8 Note 4 Frame wthout FAS Notes: 1) Si – bit reserved for international use. Usually set to 1 except when CRC4 is used as will be seen. 2) Bit always set on 1. 3)Remote alarm indication. If operation normal, set on 0, in alarm set on 1. In case the converter receptor loses frame synch this bit is transmitted in 1.
Bits 1 to 8 of timeslot 0 of each interface SMF Frame 1 2 3 4 5 6 7 8 # 0 C1/Si 0 0 1 1 0 1 1 1 0/Si 1 A Sa4 Sa5 Sa6 Sa7 Sa8 2 C2/Si 0 0 1 1 0 1 1 3 0/Si 1 A Sa4 Sa5 Sa6 Sa7 Sa8 I 4 C3/Si 0 0 1 1 0 1 1 5 1/Si 1 A Sa4 Sa5 Sa6 Sa7 Sa8 6 C4/Si 0 0 1 1 0 1 1 7 0/Si 1 A Sa4 Sa5 Sa6 Sa7 Sa8 8 C1/Si 0 0 1 1 0 1 1 9 1/Si 1 A Sa4 Sa5 Sa6 Sa7 Sa8 10 C2/Si 0 0 1 1 0 1 1 11 1/Si 1 A Sa4 Sa5 Sa6 Sa7 Sa8 II 12 C3/Si 0 0 1 1 0 1 1 13 E/Si 1 A Sa4 Sa5 Sa6 Sa7 Sa8 14 C4/Si 0 0 1 1 0 1 1 15 E/Si 1 A Sa4 Sa5 Sa6 Sa7 Sa8 SMF i
bits 1 to 8 of timeslot 16 of each frame 3 4 5 6 7 0 0 0 0 0 X0 Y X1 1 A1 B1 C1 D1 A16 B16 C16 2 A2 B2 C2 D2 A17 B17 C17 3 A3 B3 C3 D3 A18 B18 C18 4 A4 B4 C4 D4 A19 B19 C19 5 A5 B5 C5 D5 A20 B20 C20 6 A6 B6 C6 D6 A21 B21 C21 7 A7 B7 C7 D7 A22 B22 C22 8 A8 B8 C8 D8 A23 B23 C23 9 A9 B9 C9 D9 A24 B24 C24 10 A10 B10 C10 D10 A25 B25 C25 11 A11 B11 C11 D11 A26 B26 C26 12 A12 B12 C12 D12 A27 B27 C27 13 A13 B13 C13 D13 A28 B28 C28 14 A14 B14 C14 D14 A29 B29 C29 15 A15 B15 C15 D15 A30 B30 C30 Ai-Di are the channel s
1 0 1 0 0 0 0 0 0 0 0 1 1 1 NRZ Data 2048kbit/s Coding AMI B Coding HDB3 B B B B B B B V 4 zeros sequence V B B B 4 zeros sequence Figure 34. HDB3 coding in the G.703 2048kbit/s Interface 16.2.1. G.703 Interface Electrical Characteristics for Coaxial Cable Speed: 2048kbit/s ± 50ppm Pulse format: rectangular Number of pairs in each transmission direction: 1 coaxial pair Nominal impedance: 75ohms resistive Pulse peak tensions: 2.37V ± 0.237V Space peak tensions: 0V ± 0.
17. PANEL LEDS 17.1.
† With the E1 interface enabled. ◊ With the E1 disabled. ⊥ Only for DM991SE. Ø In the 4W model this LED is replaced for 109A (line A) and 109B (line B) LEDs. The operation of LEDs remains the same. << Only on model 4W, when configured for 4 wires. The DM991S/SE modems show also the following keys: • LAL: Activates LAL test. • LDL: Activates LDL test, for the G.703 side as well as for the V.35 or V.36/V.11 side. • LDR: Generate LDR request.
₪ When interface V.35 is disabled, these LEDs will represent data from interface E1 or data from the Ethernet interface (only in DM991SE, if interface E1 is disabled). ⊥ Only for DM991CE. Ø In the 4W model this LED is replaced for 109A (line A) and 109B (line B) LEDs. The operation of LEDs remains the same. << Only on model 4W, when configured for 4 wires Product Manual - DM991 Series V Family - 204.4092.
18. STRAPS AND DIP SWITCHES MAP 18.1. DM991S/SE Figure 35. DM991S/SE - Straps and DIPs map 18.2. DM991C/CE DM991C/CE models have different strap positions, depending on the PCI revision used. Product Manual - DM991 Series V Family - 204.4092.
18.2.1. PCI rev. 03 or lesser Figure 36. DM991C/CE – Map of Straps (PCI rev. 03 ou inferior) * Optionally available on demand. Product Manual - DM991 Series V Family - 204.4092.
18.2.2. PCI rev. 04 or higher Figure 37. DM991C/CE – Map of Straps (PCI rev. 03 ou superior) * Optionally available on demand. Product Manual - DM991 Series V Family - 204.4092.
19. TECHNICAL SPECIFICATIONS 19.1. Environmental Conditions Operating temperature: 0 to 60 °C. Relative humidity: up to 95% non-condensing. 19.2. Power 19.2.1. DM991S/SE Maximum modem power consumption is 5,5W. 19.2.2. DM991C/CE Maximum modem power consumption is 8W. 19.3. Power Input The installation of any electric equipment must be in accordance with the current law in the place where this equipment will be installed.
Power input(V) +5 +12 -12 Table 24. Maximum consumption (mA) 700 200 150 Current Maximum Consumption - DM991S/SE 19.3.2. DM991C/CE Power is supplied to the equipment through a power tri polar cable terminated with a three-prong plug. The power cord can be plugged onto any AC outlet, within the specified limits (Table 25), the selection is automatically done.
19.4. Dimensions 19.4.1. DM991S/SE The equipment is presented in a Telebrás standard card for standardized sub-rackets, measuring 177mm x 16,6mm x 316,5mm (width x height x depth). The dimensions are according with figures 1 and 2 of the 225-540-780 regulation. 19.4.2. DM991C/CE The equipment is presented in a desktop with 195mm width, 200mm depth and 44mm height (without the rubber feet, 46mm with the rubber feet). 19.5. Weight 19.5.1. DM991S/SE The equipment weighs around 0,265kgf. 19.5.2.
20. APPLICABLE STANDARDS • • • ITU-T o G.703, G.704, G.706, G.736, G.823, G.991.2, G.994.1, K.21, o V.35, V.36, V.11, V.24 and V.28. Telebrás o 225-100-706 in the part relating to the G.703 interface, clocks and alarms. o SDT 225-540-784 e SDT 225-540-530 in the items contained in the technical requirements and procedures applicable to Anatel category I telecom product’s certification. o 225-540-780: mechanics and consumption (only DM991S/SE).
21. ANNEX I – SAFETY WARNINGS Before the installation, read the entire manual attentively. The power supply, where the supply cable is connected, must be positioned near the equipment and be on an easily accessible location, because the equipment is turned on and off through it. Follow attentively every guidance included in this manual. In case of doubts, please contact the authorized technical support. Before connecting any cable to the equipment, make sure that the grounding system is functional.
The described equipment in this manual is sensible to the static electricity. Before handling any described equipment in this manual, verify if using devices of protection against static electricity, and if these are functioning correctly. Product Manual - DM991 Series V Family - 204.4092.
22. ANLAGE 2 - SICHERHEITSHINWEISE Ganzes Handbuch vor der Installation aufmerksam durchlesen. Die Energiequelle, an die das Einspeisekabel angeschlossen wird, muss sich in der Nähe der Anlage befinden und leicht zugänglich sein, da die Anlage durch sie ein- und ausgeschaltet wird. Aufmerksam alle in diesem Handbuch enthaltenen Hinweise befolgen. Im Zweifelsfall einen zugelassenen technischen Service kontaktieren.
Die in diesem Handbuch beschriebenen Anlagen sind empfindlich gegen statische Elektrizität. Bevor irgendeine in diesem Handbuch beschriebene Vorrichtung berührt wird, sich vergewissern, dass Schutzvorrichtungen gegen statische Elektrizität getragen werden und dass sie korrekt funktionieren. Product Manual - DM991 Series V Family - 204.4092.
Phone: +55 51 3358-0100 Support: +55 51 3358-0122 Fax: +55 51 3358-0101 www.datacom.ind.
