Ericsson RX8000 17

			Chapter 1

Marketing Code	Price Object	Supply Object	Description
	Number	Number
RX83XX/SWO/NULL	FAZ 101 0108/17	FAT 102 0114	Null Packet TS License

RX8320/SWO/IP/OUT	FAZ 101 0108/25	FAT 102 0134	IP Transport Stream Out License
			Key

RX8320/UPG/IP/OUT	FAZ 101 0108/26	FAT 102 0135	IP Transport Stream Output

Table 1.10 RX8330 Hardware Options

Marketing Code	Price Object	Supply Object	Description
	Number	Number
RX83XX/HWO/RSECAM	FAZ 101 0108/33	ROA 128 4418	Russian SECAM Output Card

RX83XX/HWO/IP/OUT	FAZ 101 0108/22	ROA 128 3646	Dual Gigabit IP Transport Stream
			Output Card

RX8XXX/CABLE/XLR	FAZ 101 0108/24	RPM 901 364	XLR Terminal Audio Break-out
			Cable

RX8XXX/CABLE/SCRTRM	FAZ 101 0108/23	RPM 901 365	Screw Terminal Audio Break-out
			Cable

Table 1.11 RX8330 Software Options

Marketing Code	Price Object	Supply Object	Description
	Number	Number
RX83XX/SWO/DVBS2/QPSK	FAZ 101 0108/6	FAT 102 0098	DVB-S2 QPSK License Key

RX83XX/SWO/DVBS2/8PSK	FAZ 101 0108/4	FAT 102 0102	DVB-S2 8PSK License Key

RX83XX/SWO/DVBS2/LSYM	FAZ 101 0108/5	FAT 102 0103	DVB-S2 Low Symbol Rate License

RX83XX/SWO/MPEG2/SD	FAZ 101 0108/10	FAT 102 0105	MPEG-2 SD Decoding

RX83XX/SWO/MPEG2/HD	FAZ 101 0108/9	FAT 102 0106	MPEG-2 HD & SD Decoding

RX83XX/SWO/AC3	FAZ 101 0108/28	FAT 102 0107	Dolby Digital® Decoding / Down-
			mixing

RX83XX/SWO/PW	FAZ 101 0108/29	FAT 102 0110	Password Protection for Web
			Browser

RX83XX/SWO/AAC	FAZ 101 0108/2	FAT 102 0370	AAC Decode

RX83XX/SWO/BISS	FAZ 101 0108/30	FAT 102 0132	BISS Modes 1 and E

RX83XX/SWO/BISS/MSD	FAZ 101 0108/16	FAT 102 0133	BISS Modes 1 and E Multi-Service
			Decryption

RX83XX/SWO/SING/SERVFILT	FAZ 101 0108/15	FAT 102 0138	Single Service Filtering

RX83XX/SWO/MULT/SERVFILT	FAZ 101 0108/14	FAT 102 0137	Multi-Service Filtering

RX83XX/SWO/IP/DATA	FAZ 101 0108/7	FAT 102 0113	High Speed Data Output

EN/LZT 790 0005 R1A

1-9

Contents

RX8000 Series Receivers Copyright Disclaimer Contents Chapter 1: Introduction Chapter 2: Installing the Equipment important safety information Chapter 3: Front Panel Control Introduction Revision History Issue Date Software Version Macrovision Warnings, Cautions and Notes Heed Warnings Read Instructions Follow Instructions Warning Caution Note: EMC Compliance Contact Information Gold Business Critical support Silver Business Advantage Customer Services Technical Training Customer Services and Technical Training Postal Address Return of Equipment Technical Publications Introduction List of Figures List of Tables 1.1Introduction 1.1.1Who Should Use this Reference Guide 1.1.2What Equipment is Covered by this Reference Guide version 4.3.2 and later System Menu About Marketing Code Page Page Page Page Page 1.2Summary of Features 1.2.1RX8200 Advanced Modular Receiver 1.2.1.2RX8200 Factory Fit Optional Hardware Features 1.2.1.3RX8200 Optional Software Features 1.2.2RX8310 Distribution Receiver 1.2.3RX8315 Distribution Receiver 1.2.4RX8320 ATSC Broadcast Receiver 1.2.5RX8330 Distribution Receiver 1.2.5.2RX8330 Factory Fit Optional Hardware Features 1.2.5.3RX8330 Optional Software Features 1.3The Satellite Receiver 1.3.1Typical Satellite System 1.3.2Input Connections 1.3.3What the Satellite Receiver Does 1.4The Telco Receiver/Decoder 1.4.1Typical Decoder System 1.4.2What the Decoder Does 1.5Construction 1.6Front Panel Item Color CRITICAL Error MAJOR or MINOR Error NO Errors 1.7Rear Panels Type Page Installing the Equipment Page 2.1Read This First 2.1.1Handling 2.1.2Installing the Equipment 2.1.3Lifting 2.1.4Site Requirements 2.2Preliminary Checks 2.2.1Mechanical Inspection 2.2.2Moving the Equipment Safely 2.3Installing the Equipment 2.3.1Fixing 2.3.2Ventilation 2.3.3Installing Cables - Safety 2.4EMC Compliance Statements1 2.4.1EN 55022/AS/NZS 2.4.2FCC 2.5AC Supply Operating Voltage and Fusing – Safety Information 2.5.1AC Power Supply 2.5.2AC Power Supply Cord 2.5.3Connecting the Equipment to the AC Power Supply 2.6Protective Earth/Technical Earth 2.7Signal Connections 2.7.1General 2.7.2RF IN Connector (RX8200 and RX8320 only) 2.7.3ASI OUT Connector (RX8310/15/20 only) 2.7.4ASI/SDI OUT Connector (RX8200 and RX8330 only) 2.7.5ASI/HD-SDI/SD-SDIOUT Connector (RX8200 only) 2.7.6CVBS Connector 2.7.7AUDIO/AUDIO OUT Connector 2.7.8ETHERNET/CONTROL Connector 2.7.9ASI IN Connector 2.7.10COMPONENT VIDEO Connector (RX8200 only) 2.7.11DATA OUT Connector 2.7.12ALARM Connector 2.7.13RS232/RS485 REMOTE Connector Front Panel Control Page 3.1Introduction 3.2Powering the Equipment 3.2.1Switching On 3.2.2Power Up Operating Modes 3.3Using the Front Panel Controls 3.3.1USB Connector 3.3.2Status LED 3.3.3LCD 3.3.4Arrow Pushbuttons (Up, Down, Left, Right) 3.3.5Edit and Save Pushbuttons 3.4Example Configuration 3.5Front Panel Menus Page 3.5.11 System 3.5.1.1.21.1.2 MAC1 MAC1 |MAC#1 1.1.2|00:20:AA:55:05:9C To edit the MAC1 address: 3.5.1.1.31.1.3 IP2 To edit the Gateway address: 3.5.1.1.61.1.6 Status STATUS 1.1.6|CTRL 2 LINK STATUS Down 3.5.1.21.2 Build 3.5.1.2.31.2.3 SD FPGA Version VERSIONS |SD FPGA VERSION 1.2.3|0.2.5 [Built: Thu Apr 8 16:25:22 2010] 3.5.1.2.41.2.4 HD FPGA Version (RX8200 only) VERSIONS |HD FPGA VERSION 3.5.1.2.81.2.8 422 FW (Option Card) VERSIONS |422 FW : 1.2.8| 3.5.1.2.91.2.9 422 SW (Option Card) VERSIONS |422 SW : 3.5.1.4.21.4.2 Reset All Incl IP & Reboot 1.4.2|NO To enable/disable the reset including IP network parameters: 3.5.1.51.5 Front Panel (FP) |LOCKOUT FRONT PANEL ACCESS 3.5.22 Input (Satellite Input Card RX8200/HWO/DVBS2) 3.5.2.22.2 Select Satellite Input |SELECT SATELLITE INPUT |RF Input To select the relevant RF Input: 3.5.2.2.12.2.1 Status 3.5.2.2.1.4 2.2.1.4 Standard/Spectral Sense |STANDARD |SPECTRAL SENSE 2.2.1.5 Pilot Symbols/Frame Size |PILOT SYMBOLS SOURCE |SATELLITE FREQUENCY |01550.000 MHz 3.5.2.2.2.52.2.2.5 Rolloff |ROLLOFF |20% To edit the Rolloff setting: 3.5.2.2.2.62.2.2.6 Spectrum Sense 3.5.2.2.2.82.2.2.8 LNB Power OP SOURCE 1 |LNB POWER OP |DISABLE To enable/disable the LNB Power Op: 3.5.2.2.2.92.2.2.9 LNB Power Level 3.5.32 Input (I/P Input Card RX8XXX/HWO/IP/GIGE) 3.5.3.22.2 IP Input Card IP I/P |IP Input Card 3.5.3.2.12.2.1 Status |LAST IP RECEIVED 2.2.1.4|0000000000 3.5.3.2.1.52.2.1.5 Corrected Packet Count 2.2.1.5|0000000000 3.5.3.2.1.62.2.1.6 Lost Packet Count 2.2.1.6|0000000000 2.2.1.10|0000000010 3.5.3.2.1.112.2.1.11 MDI Delay Factor 2.2.1.11|00.000 3.5.3.2.1.122.2.1.12 MDI Media Loss Rate 2.2.1.12|0 NETWORK |IP ADDRESS To edit the Network 1 IP address: 3.5.3.2.2.12.2.2.1 Subnet Mask NETWORK 1 |SUBNET MASK 3.5.3.2.2.32.2.2.3 MAC Address NETWORK 1 |MAC ADDRESS 2.2.2.3|00:20:AA:4f:06:1b 3.5.3.2.2.42.2.2.4 Ethernet Line Mode NETWORK 1 |ETHERNET LINE MODE 3.5.3.2.2.82.2.2.8 ICMP Enable NETWORK 1 |ICMP ENABLE 2.2.2.8|Enable To enable/disable the ICMP: 3.5.3.2.2.92.2.2.9 VLAN Enable 3.5.3.2.2.112.2.2.11 ARP Enable NETWORK 1 |ARP ENABLE 2.2.2.11|Enable To enable/disable the ARP: 3.5.3.2.2.122.2.2.12 Port 1 IGMP Version 3.5.3.2.32.2.3 Network 3.5.3.2.42.2.4 Setup/MAC Mode SETUP |MAC MODE |Same 3.5.3.2.4.22.2.4.2 SNMP Enable 2.2.4.2|Disable To enable/disable the SNMP: 3.5.3.2.4.32.2.4.3 FEC Enable 2.2.4.3|Disable 3.5.3.2.4.52.2.4.5 Network Util 2 (Max Value) 2.2.4.5|100 To edit the Network Util 2: 3.5.3.2.4.62.2.4.6 MDI Delay Factor (Max Value) 2.2.4.6|50.000 2.2.4.7|0 To edit the MDI Media Loss Rate: 3.5.3.2.52.2.5 I/P Port/ Use Input Ports I/P PORT |USE INPUT PORTS 3.5.3.2.62.2.6 Stream 1/ Unicast Enable STREAM |UNICAST ENABLE |TRUE To enable/disable the Unicast 1: To edit the Source IP Address 1: 3.5.3.2.6.32.2.6.3 UDP Port STREAM 1 |UDP PORT 2.2.6.3|04000 To edit the UDP Port 1 value: 3.5.3.2.6.52.2.6.5 Row Port STREAM 1 |ROW PORT To edit the Row Port 1 value: 3.5.3.2.72.2.7 Stream 2/ Unicast Enable 3.5.3.2.82.2.8 Alarms/ Alerts 2.2.8.2 Port 1/ 2 Link Down |PORT 1 LINK DOWN |PORT 2 LINK DOWN 2.2.8.3 Port 1/ 2 IP Conflict |PORT 1 IP CONFLICT 3.5.42 Input (8VSB Input Card RX8320/HWO/8VSB) 8VSB 8VSB |CHANNEL SNR 0.00dB |FREQUENCY 755.000 MHz 2 Input (G703 ATM Input Card RX8XXX/HWO/G703) 3.5.5.22.2 G703 G703 |CONFIGURE G.703 INPUT 3.5.5.2.12.2.1 G703 Status 3.5.5.2.1.12.2.1.1 Card Alarm Status 3.5.5.2.1.42.2.1.4 ATM Alert Status 2.2.1.4| SYNC LOSS 3.5.5.2.1.52.2.1.5 PDH Rate/Framing |PDH RATE NONE |MODE MPEG 2.2.2.1| To choose the Mode: 3.5.5.2.2.22.2.2.2 Destuffing/Deinterleaver 3.5.5.2.2.42.2.2.4 Man Packet Length Ctrl/Packet Length Size |MAN PKT LENGTH CTRL FALSE |PACKET LENGTH To select the Man Packet Length Ctrl value: To select the ATM Alpha value: 3.5.5.2.2.62.2.2.6 ATM Descrambling/ATM Header Correction DESCRAMBLING HEADER CORRECTION To select the ATM Descrambling value: HEADER ERR IGNORE VPI To select the ATM Header Err Ignore value: To select the ATM VPI value: 3.5.5.2.2.82.2.2.8 Sync CNT To Lock/Sync Miss Sample Size 3.5.63 Service |SERVICE ID: 3.1.1|SERVICE NO PMT 3.5.6.23.2 Video |VIDEO 3.5.6.2.13.2.1 Component Selection To edit the user STD: 3.5.6.2.33.2.3 Delay Mode 3.2.3| To edit the Delay Mode: 3.5.6.2.43.2.4 RX Delay 3.5.6.33.3 Audio |AUDIO 3.5.6.3.13.3.1 Audio 1 Menu 3.5.6.3.1.13.3.1.1. Audio Selection AUDIO 1 |COMPONENT SELECTION: 3.5.6.3.23.3.2 – 3.3.6 Audio 3.5.6.43.4 SDI Embedding |SDI EMBEDDING 3.5.6.4.13.4.1 CH1+2 Embedding CH1+2 |NO EMBEDDING 3.5.74 CA Systems 3.5.7.1.1.24.1.1.2 - 4.1.1.24 Service ID Slots 3.5.7.24.2 Director |DIRECTOR 3.5.7.2.14.2.1 Over Air Message DIR 4.2.3|34390968634 3.5.7.2.44.2.4 Manuf ID |MANUF ID DE 4.2.4|MODEL ID 1D 3.5.7.2.54.2.5 Download Status To reset PIN: 3.5.7.2.84.2.8 Over Air Extd Carrier Timeout 4.2.8|FALSE To edit the current setting: 3.5.7.2.94.2.9 Over Air Control 3.5.85 Output 3.5.8.1.25.1.2 Output |OUTPUT THREE : SD-SDI 5.1.2| To edit the output 3 type: 3.5.8.25.2 TS Feed Selection 3.5.96 Presets To save a preset: Page Remote Control Page 4.1Introduction 4.1.1Local Control Lockout 4.2RS232/485 RCP 4.3Director 4.3.1Setting up Director Remote Control 4.3.2Over-AirControl (OAC) Lockout 4.4Web Browser 4.4.1Setting Up Web Browser Remote Control 4.4.2Web Browser Interface Status Page 4.5SNMP 4.5.1Setting Up SNMP Remote Control 4.5.2Downloading the MIB Page Web Browser Control Page 5.1Introduction 5.1.1Setting up Web Browser Control 5.1.2Using the Web Browser Interface Header Function Tabs Navigation Path Toolbar Main Web Page ItemDescription Navigation Parameter Presentation Table Operations 5.2Web Pages 5.2.1Status 5.2.2Device Info Product Name Front Panel Lockout Reboot Unit Reset Parameters to Factory Defaults Flush all Quality Logs Refresh 5.2.2.3Device Info > Network Settings Network Settings 5.2.2.4Device Info > Modules 5.2.2.5Device Info > Trap Destination Table Trap Destination To add a new item to this page: Add Item Add 5.2.3Alarms 5.2.4Customization Parameters Custom Key Licensed Features 5.2.4.1Licensed Features 5.2.5CA 5.2.6Input Main Page (Satellite Input Card RX8200/HWO/DVBS2 fitted) Input Source Primary Input Input Loss Switch Period Return to Primary Primary Lock Switch Period Configuration 5.2.6.2Input > SAT Input > Configuration RF # LNB (Low-Noise Block Converter) LO (Local Oscillator) Frequency 5.2.7Input Main Page (I/P Input Card RX8XX/HWO/GIGE fitted) IP Input TS Null Pkt Threshold IP Input button 5.2.7.1Input > IP Input IP Address 1/2 Subnet Mask 1/2 Default Gateway 1/2 VLAN (Virtual Local Area Network) Tag 1/2 VLAN Enable 1/2 Mcast IP Address 1/2 Source IP Address 1/2 UDP Port 1/2 Column Port 1/2 Row Port 1/2 5.2.8Input (8VSB Input Card RX8320/HWO/8VSB fitted) 5.2.9Input (G.703 ATM Input Card RX8XXX/HWO/G.703 fitted) Input source 5.2.9.1Input > G.703 Input Deinterleaver Reed-Solomon 5.2.10Service Plus 5.2.11Decode PCR PID (Program ID) Audio 1/2 sourced from Clipping Level Group Decode Mode PID Gain 5.2.11.1Decode > Advanced Advanced Service Hunt Service Drop Major/Minor Tracking PID Flush SI Mode Test Pattern Standard Video Output Mode VGA Output Format VGA Output Sync Routing Page VBI PID Enable VANC CC Insertion VBI Rating Insertion VANC CC Insertion Line VANC Station ID User Name Enable AFD/Bar 5.2.11.3Decode > Splice Splice Splice PID Enable Subtitles Scale Position Composition Page ID Ancillary Page ID 5.2.12Output TS (Transport Stream) Feed Output One/Two/Three Service Filter Mode Bitrate Type TS Output Constant Bitrate 5.2.13Download 5.2.14SNMP 5.2.15Presets 5.2.16Save/Load Save Configuration to File Right Click to Save Right Click to Save (with parameter names) Restore Configuration from File Save MIBs File 5.2.17Help Options Page 6.1Hardware and Software Options Page 6.1.1DVB-S2Input Card (RX8200/HWO/DVBS2) 6.1.28-VSBInput Card (RX83XX/HWO/8VSB) 6.1.3Gigabyte 100/1000Base T Ethernet (RX8XXX/HWO/IP/GIGE) 6.1.4G.703 ATM Input Card (RX8XXX/HWO/G703) 6.1.5MPEG-24:2:2 SD Decoding Card (RX82XX/HWO/MP2/422) 6.1.6MPEG-4AVC 4:2:2 Decoding Card (RX8200/BAS/2) 6.1.7IP Output Card (RX8XXX/HWO/IP/OUT) 6.1.8SD Video and ASI Output Card (RX8200/HWO/SD) 6.1.9HD and SD Video and ASI Output Card (RX8200/HWO/HD/3G) 6.1.10High Quality Down-conversion(RX8200/HWO/HQDCONV) 6.1.11RS232 Low Speed Asynchronous Data and Remote Control (RX8200/HWO/RS232) 6.1.12Balanced Audio Output Card (RX8200/HWO/BAL/AUD) 6.2Software Enabled Options 6.2.1DVB-S2QPSK (RX8XXX/SWO/DVBS2/QPSK) 6.2.2DVB-S28PSK (RX8XXX/SWO/DVBS2/8PSK) 6.2.3DVB-S2Low Symbol Rate (RX8XXX/SWO/DVBS2/LSYM) 6.2.4MPEG-2SD Decode (RX8XXX/SWO/MPEG2/SD) 6.2.5MPEG-2HD Decode (RX8XXX/SWO/MPEG2/HD) 6.2.6MPEG-4AVC SD Decode (RX8XXX/SWO/MPEG4/SD) 6.2.7MPEG-4AVC HD Decode (RX8XXX/SWO/MPEG4/HD) 6.2.8MPEG-2/4AVC SD 4:2:0 Decode (RX8XXX/SWO/MP2/MP4/SD) 6.2.10Single-ServiceFiltering (RX8XXX/SWO/SING/SERVFILT) 6.2.11Multi-ServiceFiltering (RX8XXX/SWO/MULTI/SERVFILT) 6.2.12High-SpeedData Output (RX8XXX/SWO/IP/DATA) 6.2.13Password Protection of Web Browser (RX8XXX/SWO/PW) 6.2.14IP Transport Stream Output (RX8XXX/SWO/IP/OUT) 6.2.15Director (RX8XXX/SWO/DIR5) 6.2.16Director Multi-ServiceDecryption (RX8XXX/SWO/DIR5/MSD) 6.2.17Multi-ServiceCAM Decryption (RX8XXX/SWO/MSD) 6.2.18Serial Data Interface (RX8XXX/SWO/SDI) 6.2.19Dolby Digital Decode (RX8XXX/SWO/AC3) 6.2.21DVB-S216APSK (RX8XXX/SWO/DVBS2/16APSK) 6.2.22Null Packet Detection Redundancy Switching (RX8XXX/SWO/DVBS2/NULL) 6.2.23DVB Common Interface (RX8XXX/SWO/CI) 6.2.24BISS CA (RX8XXX/SWO/BISS) 6.2.25BISS Multi-ServiceCA (RX8XXX/SWO/BISS/MSD) 6.2.27MPEG-2SD 4:2:2 Decoding (RX8200/SWO/MP2/SD/422) 6.2.28MPEG-2HD 4:2:2 Decoding (RX8200/SWO/MP2/HD/422) 6.2.29MPEG-4SD 4:2:2 Decoding (RX8200/SWO/MP4/SD/422) 6.2.30MPEG-4HD 4:2:2 Decoding (RX8200/SWO/MP4/HD/422) 6.2.31Down-Conversion(RX8200/SWO/DCONV) 6.2.34Framesync (RX8200/SWO/FSYNC) 6.2.354 x Audio Capability (RX8200/SWO/4AUD) 6.2.36Low Latency Decode (RX8200/SWO/LDELAY) Page Preventive Maintenance and Fault-Finding Page 7.1Introduction 7.2Preventive Maintenance 7.2.1Routing Inspection 7.2.2Cleaning 7.2.3Servicing 7.3Maintenance and Support Services 7.3.1Introduction 7.3.2Warranty 7.3.3Levels of Continuing Ericsson Service Support 7.4Fault-finding 7.4.1General 7.4.2System Defaults 7.4.3Preliminary Investigations 7.4.4AC Fuse Replacement 7.4.5Power Supply Problems 7.4.6Summary Status LED Unlit 7.4.7Fan(s) Not Working/Overheating 7.4.8Input Card Failure 7.5Disposal 7.5.1Moulded Plugs 7.5.2Equipment Glossary AMOL I and ARP ASI ASIC Async Bouquet B-Picture; B-Frame BPSK Buffer Byte-mode Chrominance Closed Captioning CODE Codec Dec DCE DCT DDS Decoder Decoding Time DSNG DSP DTE DTH DTMF Encryption EPG Ethernet ETS ETSI GUI HDTV HPA HSYNC HTTP I-picture; I-frame IPPV IRD IRE ISDN JPEG kbps Kbit Ku-band LAN MEM Meta-data MMDS Motion Compensation Multicast MUSICAM Mux Network NICAM OFDM OPPV OSD Packet PAL PES PID PIN Pixel pk-pk PRPB PROM PSI PSIP PSK ROM RSVP RTP RLC SCPC STB SFN Single Packet Burst Mode Smart Card SNTP Spatial Redundancy SPI Statistical Redundancy UART UDP Unicast Upconvert Uplink Y (Luminance) Y/C YUV Technical Specification Page Output Supported Video Resolutions Supported Video Bit Rates Composite Video Output Analogue HD Video Output Value HD SDI Digital Video Audio Decoding and Output Stage MPEG Audio B.2.3 Dolby Digital AC-3Audio Audio Output Format B.3.1 General Analogue Audio Page Audio Routing Lip Sync Supported Audio Specifications Supported Audio Bit Rates Digital Audio Outputs Input Specifications DVB-S2Satellite Receivers L-bandPower DVB-SModulation (EN 300 421) DVB-S2Modulation (EN 302 307) Miscellaneous Convolutional FEC Eb/No Ratio (dB) in IF Loop for correct MPEG-2 Rate system operation LDPC FEC Rate DVB-S2Theoretical5 Es/No Ratio (dB) in perfect linear channel for correct MPEG-2system operation B.4.1.2 LNB Power and Control 8-VSBTerrestrial Receivers DVB-ASIInput 100/1000BaseT Dual NIC Input Receivers B.4.5 Frame Sync Connector Output Specifications Video Outputs Audio Outputs Alarm Connector DVB-ASIOutput 1000BaseT IP Output Environmental Conditions Physical Power Supply – AC Mains Input B.8 Cable Types B.9 Compliance7 B.9.1 Safety B.9.2 EMC8 B.9.3 Telecommunications CE Marking C-TickMark Packaging Statement Packaging Markings Materials Declarations Equipment Disposal Recycling Page Language Abbreviations Page C.1 ISO Languages C.2 Non-ISOLanguages