USER GUIDE. 2 Channel POTS Mux DIN Fiber Link System. Introduction SYSTEM INSTALLATION INFORMATION. The leader in rugged fiber optic technology.

Similar documents
T1/E1. RLH 16 T1 Over Gigabit Ethernet Fiber Optic Multiplexer System USER GUIDE. Introduction. Key Features

RLH 2 Wire Digital Phone Fiber Link Card System

USER GUIDE. 2-Wire Analog Phone System 4RU Plug-in Card. Description. Single Channel Analog Phone over Fiber

RLH Single Channel T1 Fiber Link Card System

2-Pair HDSL1 Adtran Fiber Optic Link System

USER MANUAL MODEL 2300M SERIES. OpticLink Ethernet Media Converters (2300M, 2310M, 2311M, & 2312M)

HARTING econ 3000 Introduction and features

USER S MANUAL. Ethernet 10/100 Transceiver Series DL221/DL221A

8-port 10/100Base-TX +2-port 100Base-FX Switch. User s Guide

F2400 FOM II Series Fiber Optic Modem Technical Manual

M7250P. PoE Powered. Gigabit Ethernet Media Converter 1000BASE-TX TO 1000BASE-SX/LX. Installation Guide

5-port / 8-port 10/100BaseTX Industrial Ethernet Switch User Manual

Industrial RS-232/ RS-422/ RS-485 over Ethernet Media Converter

Perle 10/100 Ethernet Media Converters

FCC COMPLIANCE STATEMENT

4-Port 10/100Mbps with PoE + 1-Port 100FX Industrial Ethernet Switch Wide Temperature

User Guide. MC100CM MC110CS Fast Ethernet Media Converter. MC111CS MC112CS WDM Fast Ethernet Media Converter

Perle 10/100/1000 Ethernet Media Converter Module

Industrial 10/100/1000BASE-T to 100/1000BASE-X SFP Media Converter

Gigabit Switching Ethernet Media Converters - Product User Guide

ConneXium Ethernet Switches TCSESU0 F N0 Quick Reference Guide

5-port 10/100Base-TX Industrial Switch (314500) User s Guide

HARTING mcon 1000 Introduction and features

Loop-O9310 4E1 or 4T1 Fiber Optical Mux

Perle Protocol Transparent Media Converter Modules

Loop-O9310 4E1 or 4T1 Fiber Optical Mux

IMC-101 Series Hardware Installation Guide

alpha DSL WTM HS Instructions for use ADSL modem alpha DSL WTM HS

Loop-O9310 4E1 or 4T1 Fiber Optical Mux

NS-205-IP67 5-Port Industrial 10/100 Mbps Ethernet Switch with IP67 Casing

BX7000 Multi-Access Gateway Getting Started Guide

FOM-5A, 6A. Asynchronous Fiber Optic Modem

LevelOne IFE Port PoE + 1-Port TP Industrial Fast Ethernet Switch User Manual

FOSTCDR. Industrial Serial to Multimode Fiber Optic Converter PRODUCT INFORMATION B&B ELECTRONICS. Specifications Serial Technology

TrueAlarm Fire Alarm Systems

4-Port 10/100Mbps with PoE + 1-Port 100FX Industrial Web Smart Switch

2G-1.1.0, 200M-2.0.3, 200M-1.0.1

10/100/1000 Base-T to Gigabit Fiber Media Converter

MOXA EtherDevice Switch

Fiber Optic Connectivity SECURITY SURVEILLANCE SOLUTIONS. ComNet Managed Ethernet Switches

Security & Surveillance Cabling Systems

Fiber s Role in the Video Security & Surveillance Network. Curt Carlson Product Manager Transition Networks

Moxa EtherDevice Switch

Stand Alone POTS Fiber Optic System. P31372 Station (Subscriber) Unit P31379 Remote (Exchanger) Unit. Description & Installation

About the BitStorm 6051 POTS Splitter

VOICE RECORDING SYSTEM ISDN PRI / BRI

FlexPoint T1/E1 Copper to Fiber Line Driver

4-Port 10/100Base-TX with PoE + 1-Port BNC / RJ-11 Industrial Ethernet Extender

Fiber Optic Selector Guide for Analog & Digital Data Links, Contact Closures & Multiplexers

Installation Guide for GigaBit Fiber Port Aggregator Tap with SFP Monitor Ports

Media Converters & Chassis

Gigabit Ethernet Copper-to-Fiber Converters

MICROSENS Media Converter 10/100/1000T to Gigabit Fiber

AN-3 SEVEN KEY CONSIDERATIONS BEFORE YOU START YOUR SLIC OR FXS PHONE LINE INTERFACE DESIGN

Quick Installation Guide 24-port PoE switch with 2 copper Gigabit ports and 2 Gigabit SFP ports (af Version 15.4W)

SOLUTIONS FOR AN EVOLVING WORLD. T1/E1 and C Fiber Service Units

HP ProCurve High-Speed Transceivers Installation Guide

USER GUIDE. Studio Hotline Multi-line System Phone Flasher and Door/Alert Indicator Input Module and Indicator. DM Engineering. Version 1.

KOM200. Industrial Serial to Fiber Media Converter. User s Manual

XPress-Pro SW Series Hardened Ethernet Switches Enabling Communication for the Demanding Industrial Environment

INTRODUCTION TO MEDIA CONVERSION

TELECOM HF VHF UHF over IP

InnoMedia ESBC B. Quick Install Guide. 1

2-Pair. Managed SHDSL Ethernet Extender. User s Manual

WHITE PAPER : TROUBLESHOOTING FEATURES for Media Conversion Products

Mini-HDMI Series MINIATURE MULTIMODE FIBER OPTIC HDMI TRANSMISSION SYSTEM

Media Converters & Chassis

HARTING mcon 3000 Introduction and features

VCL-PRI ISDN VALIANT COMMUNICATIONS LIMITED. Primary Rate (Euro-ISDN) Multiplexer. Product Brochure & Data Sheet

8-Port 10/100Mbps 802.3at PoE + 1-Port 10/100/1000Mbps Desktop Switch

How To Set Up A Modem (Marc) Model (Marc) Model 2 (Marr) Model 1 (Marm) Model 4 (Mariar) Model 8 (Marp) Model 6 (Mar

TX2123 RS485 TO ETHERNET ADAPTOR

10 Port L2 Managed Gigabit Ethernet Switch with 2 Open SFP Slots - Rack Mountable

AXIS T81B22 DC 30W Midspan

GEU Port Gigabit Switch

Instruction Manual RT-94845SL RR-94845SL Forty-Eight Channel Video Multiplexer With Bi-directional Ethernet Data

EDR-G903 Series. Industrial Gigabit Firewall/VPN secure router. Introduction. Specifications. Industrial Ethernet Solutions

ENET-710. ENET Ethernet Module ENET-710 JAN / 06 FOUNDATION

16-Port and 24-Port 10/100 Switches

EKI port 10/100Base-TX Industrial Unmanaged Ethernet Switch. EKI port 10/100Base-TX Industrial Unmanaged Ethernet Switch.

Optical Power Meter. Specification & User Manual

Moxa PoE Media Converter

Optimux-34, Optimux-25

Optimux-134, Optimux-125

Gigabit Ethernet Fiber Media Converter - SM LC - 10km

T-Extender E-Extender

User manual Rev 1.3 Contents

Perle Gigabit Fiber to Fiber Media Converters

Setting Up and Testing the MAX Hardware

PATTON TECH NOTES What are FXS and FXO?

MCR1900 Media Converter 19-Slot Chassis

Installation Guide for. 10/100 to Triple-speed Port Aggregator. Model TPA-CU Doc. PUBTPACUU Rev. 1, 12/08. In-Line

Copper to Fiber Stand-Alone Media Converter. Quick Installation Guide

IEEE 802.3af 4-Port Power over Ethernet Injector Hub POE-400. User s Manual

MDI/MDIX) FEP-32008T-3

Optimux-1553 Fiber Multiplexers for 3 E3/T3 over STM-1/OC-3

NC-12 Modbus Application

Prisma Optical Media Converters Industrial Ethernet 10/100 Switching Mini Media Converters

Installation Guide for Gig Zero Delay Tap and 10/100/1000BaseT Tap

PT100 Portable TAP. User Guide. Revision 1.0

Transcription:

The leader in rugged fiber optic technology. USER GUIDE! Lifetime Warranty U-04 015A-01 Channel POTS Mux DIN Fiber Link System SYSTEM INSTALLATION INFORMATION Introduction The Channel POTS Mux DIN Fiber Link system provides a comprehensive method of multiplexing POTS channels over a single pair of multimode or single mode fibers. Additional POTS lines may now be added when available fiber is limited, helping to reduce equipment space, and lower overall equipment costs. The system includes two 10/100 Ethernet ports for LAN interconnection. All ports operate simultaneously over the fiber optic cable, and may be used with leased lines to build up private networks and private telephone networks. It is available in either single mode or multimode with the ability to operate up to 10km/74 mi. over single mode fiber. The system requires 4~48VDC power. A typical complete system comprises one FXO/CO and one FXS/Sub module, or use FXS/Sub unit at each end for ringdown operation where direct connection to phones on both ends of the system is desired. The system is covered by our Lifetime Warranty. Key Features Single or Dual Fiber Connector channels of analog telephone Convenient LED status indicators shared RJ45 UTP ports with 10/100 automatic Half or Full- Duplex auto-negotiation Alarm indication function Compatibility with IEEE 80.3 10Base-T UTP, 100Base-TX, and 100Base-FX Devices Extends network span up to 74 miles miles (10km) Uses 4~48VDC local power T35 DIN rail or wall mount Lifetime Warranty Channel POTS Mux DIN Fiber Link System Contents Introduction 1 General Safety Practices Special Handling Requirements Acronyms 3 Applications 3 Installation 4 Operation 6 Status and Activity LEDs 6 Ordering Information 7 Specifications 8 Warranty 9 Technical Support 9 Specifications subject to change without notice. Tel. 866-DO-FIBER Fax 714 53-1885 www.fiberopticlink.com Page 1

General Safety Practices Intended Audience This guide is intended for use by knowledgeable telco/network installation, operation and repair personnel. Every effort has been made to ensure the accuracy of the information in this guide is accurate. However, due to constant product improvement, specifications and information contained in this document are subject to change without notice. Conventions Symbols for notes, attention, and caution are used throughout this manual to provide readers with additional information, advice when special attention is needed, and caution to prevent injury or equipment damage. The equipment discussed in this document may require tools designed for the purpose being described. RLH recommends that service personnel be familiar with the correct handling and use of any installation equipment used, and follow all safety precautions including the use of protective personal equipment as required. Caution - Severe Shock Hazard Never install during a lightning storm or where unsafe high voltages are present. Active phone lines may carry high DC voltages. Use caution when handling copper wiring. The DIN chassis must be grounded using the ground screw to reduce the risk of damage from lightning. HVP information The intra-building port(s) of the equipment or subassembly is suitable for connection to intra-building or unexposed wiring or cabling only. The intra-building port(s) of the equipment MUST NOT be metallically connected to interfaces that connect to the OSP or its wiring. These interfaces are designed for use as intra-building interfaces only (Type 4 ports as described in GR-1089-CORE, Issue 4) and require isolation from the exposed OSP cabling. The addition of Primary Protectors is not sufficient protection in order to connect these interfaces metallically to OSP wiring. Guidelines for handling terminated fiber cable Do not bend fiber cable sharply. Use gradual and smooth bends to avoid damaging glass fiber. Keep dust caps on fiber optic connectors at all times when disconnected. Do not remove dust caps from unused fiber connectors. Keep fiber ends and fiber connectors clean and free from dust, dirt and debris. Contamination will cause signal loss. Do not touch fiber ends. Store excess fiber on housing spools or fiber spools at site Page Tel. 866-DO-FIBER Fax 714 53-1885 www.fiberopticlink.com

Acronyms Commonly used acronyms and abbreviations Acronym/Abbreviation POTS FXO/CO FXS/Sub PBX TX RX MM SM W VOIP LAN MUX LED Description Plain Old Telephone Service (analog phone) Foreign Exchange Office or Central Office location Foreign Exchange Station or Subscriber side location Private Branch Exchange Transmit Receive Multimode Single Mode Refers to wire copper analog phone line Voice Over IP Local Area Network Multiplex Light Emitting Diode Applications Optical fiber is immune to EMI/RF interference, ground loops, and high voltage surges from lightning or ground faults, and is ideal for electrically noisy environments such as near large power sources, electrical motors, and radio communications equipment. Additionally, copper twisted pair Ethernet is limited to 100m/38ft without extenders. Using fiber optic cable provides long distance service (up to 10km/74mi.) without any additional equipment. Safety benefits of fiber optics Placement of all-dielectric fiber optic cable (instead of copper) completely eliminates the presence of a remote ground, which dramatically increases safety of personnel and reliability of equipment. By using fiber optic cable, the Channel POTS Mux provides absolute electrical isolation between fiber network devices. Tel. 866-DO-FIBER Fax 714 53-1885 www.fiberopticlink.com Page 3

ANALOG ANALOG CHANNEL ANALOG CHANNEL ANALOG Connection Diagrams The diagrams below show the two different models of the analog phone mux. Refer to the Ordering Information and Specifications sections for additional information. Power Supply 4-48VDC Network or Ethernet Devices PSTN or PABX (Central Office) POTS Lines 1 Ethernet Port Switch 4-48VDC 0.4A FXO/CO CHANNEL PORT PORT 1 RX TX PWR LOF RAI Fiber Optic Cable Up to 10km/74 mi. FXO/CO Side FXS/Sub Side 4-48VDC 0.4A FXS/SUB PORT PORT 1 RX TX PWR LOF RAI Ethernet Port Switch Power Supply 4-48VDC Network or Ethernet Devices 1 Analog Phones Dual analog phone dual 10/100 ethernet over fiber RLH Ethernet over Fiber FXO/CO unit Dual analog phone dual 10/100 ethernet over fiber RLH Ethernet over Fiber FXS/Sub unit Analog phone mux system connection diagram Power Supply 4-48VDC Network or Ethernet Devices Analog Phones 1 Ethernet Port Switch 4-48VDC 0.4A FXO/CO CHANNEL PORT PORT 1 RX TX PWR LOF RAI Fiber Optic Cable Up to 10km/74 mi. Side A Side B 4-48VDC 0.4A FXS/SUB PORT PORT 1 RX TX PWR LOF RAI Ethernet Port Switch Power Supply 4-48VDC Network or Ethernet Devices 1 Analog Phones Dual analog phone dual 10/100 ethernet over fiber RLH Ethernet over Fiber FXS/Sub unit Dual analog phone dual 10/100 ethernet over fiber RLH Ethernet over Fiber FXS/Sub unit Analog phone mux system ringdown circuit connection diagram Installation Prior to installation: Check for shipping damage Check the contents to ensure correct model and powering options Make sure you have the correct fiber type and power available Have a clean, dry installation environment ready Observe anti-static precautions Required for installation: Suitable wall or DIN rail space 4~48VDC power supply Page 4 Tel. 866-DO-FIBER Fax 714 53-1885 www.fiberopticlink.com

FXO/CO (Central Office) Side Unit The FXO/CO side unit provides the electrical-optical interface between PSTN or PABX -wire copper analog phone lines, Ethernet devices or LAN, and the optical fiber cable. FXS/Sub (Subscriber Side) Side Unit The FXS/Sub side provides the electrical-optical interface between the copper -wire analog phone line devices (phones, fax, modem), Ethernet devices or LAN, and the optical fiber cable. Note: FXS/Sub units are electrically different from FXO/CO units and cannot be interchanged. When using the ringdown circuit, the FXS/Sub module is used at each end of the network. Connect optical fiber cable The optical ports may be equipped with ST or SC fiber connectors. A fiber pair is required for operation with dual fiber models, TX is the signal output side and RX is the signal input side. Bi-directional single fiber models combine input and output, and require only a single fiber, however their TX and RX wavelengths will be different. Connect fiber cables to correct TX and RX ports. On dual fiber models, the TX port of one side must be connected to the RX port of the unit at the other side. Make sure the connections for dual fiber optics are flipped accordingly. Do not remove fiber cable caps until you connect fiber to the unit, watch for contamination. Connect Ethernet ports The two Ethernet ports use standard RJ-45 connectors. The Ethernet ports are 10/100, full/duplex, auto negotiating. The ports have status indicators when operating. Refer to the LED indicators table for additional information. Connect analog phones The DIN/Wall mount model uses RJ-11 connectors for POTS lines. Simply connect each RJ-11 connector to the desired port on the faceplate. Connect Power The POTS Mux accepts 4-48VDC local power source. Note: The power terminals are not polarity sensitive, and power wires may be inserted into either side. Attach the power wires to the screw down terminal on the top of the unit. For ease of installation, the terminal block may be removed by loosening the screws on both sides of the connector and pulling straight out. If removed, seat the terminal block firmly into the connector and tighten the screws before applying power. Once power is applied, thepots Mux will begin operating automatically. Tel. 866-DO-FIBER Fax 714 53-1885 www.fiberopticlink.com Page 5

Operation Note: On the Fiber Link unit, the yellow CH LEDs on the front panel indicate which analog phone (POTS) lines are being actively used. The LED indicators on each Ethernet port indicates the port connection and operation. The LED is ON when the port is connected to a LAN or other active link, and the LED blinks when the port is sending or receiving Ethernet data. Status and Activity LED display 4-48VDC 0.4A PWR LOF RAI FXS/SUB CHANNEL ANALOG TX RX PORT 1 PORT Dual analog phone dual 10/100 ethernet over fiber LED activity and status indicators Label Name Status Description RAI Remote Alarm Indicator ON Loss of fiber or copper signal LOF Loss of Frame ON Fiber or copper frame loss Fiber Optic Connection ON Fiber connector disconnected OFF Fiber connector installed PWR Power ON Power is ON OFF Channel 1 phone is not active Channel 1 Phone Port ON Channel 1 phone is off hook Blinking Channel 1 phone is dialing OFF Channel 1 phone is not active Channel Phone Port ON Channel 1 phone is off hook Blinking Channel 1 phone is dialing ON Ethernet connected Ethernet Link (TP ports) OFF Ethernet disconnected Blinking Ethernet data is transmitting or receiving Ethernet Data (TP ports) OFF No Ethernet data activity Page 6 Tel. 866-DO-FIBER Fax 714 53-1885 www.fiberopticlink.com

Ordering Information Each Channel POTS Mux system is identified with a part number. Fiber/Connector Description Side Distance µm Part Number Multimode SC Multimode ST Bi-Directional Multimode SC SC Bi-Directional SC SC Bi-Directional SC SC ST ST ST CO/FXO Card - km / 1.5 mi 6.5/50μm RLH-PMD-03-CE-3 SUB/FXS Card - km / 1.5 mi 6.5/50μm RLH-PMD-03-SE-3 CO/FXO Card - km / 1.5 mi 6.5/50μm RLH-PMD-04-CE-3 SUB/FXS Card - km / 1.5 mi 6.5/50μm RLH-PMD-04-SE-3 CO/FXO Card A km / 1.5 mi 6.5/50μm RLH-PMD-01-CE-3 SUB/FXS Card B km / 1.5 mi 6.5/50μm RLH-PMD-0-SE-3 CO/FXO Card - 0km/1.4mi. 8~9μm RLH-PMD-40-CE-3 SUB/FXS Card - 0km/1.4mi. 8~9μm RLH-PMD-40-SE-3 CO/FXO Card A 0km/1.4mi. 8~9μm RLH-PMD-10-CE-3 SUB/FXS Card B 0km/1.4mi. 8~9μm RLH-PMD-11-SE-3 CO/FXO Card - 60km/ 37mi. 8~9μm RLH-PMD-41-CE-3 SUB/FXS Card - 60km/ 37mi. 8~9μm RLH-PMD-41-SE-3 CO/FXO Card A 60km/ 37mi. 8~9μm RLH-PMD-14-CE-3 SUB/FXS Card B 60km/ 37mi. 8~9μm RLH-PMD-15-SE-3 CO/FXO Card - 10km / 74mi. 8~9μm RLH-PMD-4-CE-3 SUB/FXS Card - 10km / 74mi. 8~9μm RLH-PMD-4-SE-3 CO/FXO Card - 0km/1.4mi. 8~9μm RLH-PMD-50-CE-3 SUB/FXS Card - 0km/1.4mi. 8~9μm RLH-PMD-50-SE-3 CO/FXO Card - 60km/ 37mi. 8~9μm RLH-PMD-51-CE-3 SUB/FXS Card - 60km/ 37mi. 8~9μm RLH-PMD-51-SE-3 CO/FXO Card - 10km / 74mi. 8~9μm RLH-PMD-5-CE-3 SUB/FXS Card - 10km / 74mi. 8~9μm RLH-PMD-5-SE-3 A complete system requires a FXO/CO and a FXS/Sub unit, or two FXS/Sub units for ringdown. Bidirectional single fiber models require an A Side and B Side unit for a complete system. Bidirectional optic wavelength may be special ordered. Contact factory for availability. Please contact your RLH sales representative for pricing and delivery information. Tel. 866-DO-FIBER Fax 714 53-1885 www.fiberopticlink.com Page 7

Specifications Transmission method Frequency modulated light via two optical fibers Multimode 850nm/1310nm/1550nm 1310nm/1550nm Maximum Fiber Single Fiber, Multimode (50/15µm, 6.5/15µm): 1.mi./ km range Attenuation / Distance* Bi-directional (9/15µm): 1.4 mi./0km range 37 mi./60km range Dual Fiber Multimode (50/15µm, 6.5/15µm): 1.mi./ km range (9/15µm): 1.4 mi./0km range 37 mi./60km range 74 mi./10km range *Note: Distances equated using industry standard fiber and connector attenuation of 3dB/Km. Fiber condition, splices and connectors may affect actual range. Fiber Type Consumption Sensitivity (ST or SC connectors) Multimode: 50/15µm, 6.5/15µm, : 8-9/15µm + to -11dBm Better Than -36dBm BER <10-9 Phone Connector Audio Frequency Impedance Baud Rate RJ-11 300Hz-3400Hz 00Ω 560Ω//0.1µF 9600 maximum Compression Ratio Class A in ITU G.711 Loop Current Ethernet 5mA 10/100, full/duplex, auto negotiation Protocol IEEE 80.3 WAN Rate Ethernet Connector Power Requirements Consumption Dimensions/Mounting 100% Wire-Speed 100M RJ-45 4VDC, 400mA ~ 48VDC, 00mA 5W H 5in. x W 1.8in. x D 3.9in. (17mm x 46mm x 99mm) T-35 DIN rail (35mm/1-3/8 ) (DIN rail section included) Operating Temperature Humidity -4 F to +158 F (-0 C to +70 C) 95% non-condensing Page 8 Tel. 866-DO-FIBER Fax 714 53-1885 www.fiberopticlink.com

Warranty RLH is recognized throughout the U.S. for its LIFETIME WARRANTY in the telecommunications industry. We are very proud of our warranty which simply states that our Fiber Optic Link products are warranted to be free of defects in material and workmanship for the LIFE OF THE PRODUCT. We can offer this warranty because: We engineer and manufacture our Fiber Optic Links in the USA, with total confidence in our quality We understand how safety and reliability impact the total cost of ownership We know that customer support extends beyond the initial sale, so we stand behind our products To make a warranty claim, or schedule repair or replacement of your RLH product, please contact us for an RMA number. You will be promptly assisted by one of our warranty specialists. All returns must have an RMA number before we can receive any items. Technical Support Normal technical support: (Mon - Fri 6am - 6pm PST) Email: 4/7 technical support: (Outside normal business hours) (714) 53-167 Toll Free 800-877-167 Toll Free 866-DO-FIBER support@fiberopticlink.com Toll Free 1-855-RLH-4X7 Toll Free 1-855-754-497 Contact Information Corporate Headquarters: 936 N. Main Street Orange, CA 9867 USA Phone: (714) 53-167 Toll Free 1-800-877-167 Toll Free 1-866-DO-FIBER Fax: (714) 53-1885 Email: info@fiberopticlink.com Web site: www.fiberopticlink.com Tel. 866-DO-FIBER Fax 714 53-1885 www.fiberopticlink.com Page 9

LIFETIME WARRANTY RLH INDUSTRIES, INC. FIBER LINK products are warranted to be free of defects in materials and workmanship for the LIFE OF THE PRODUCT. This lifetime warranty is effective for RLH Fiber Link products sold since the date RLH was founded, February, 1988, with the exception of fiber cable products which are guaranteed to be free of defects in manufacturing. will repair or replace these products that fail, provided the defective part is returned to RLH freight prepaid. MADE IN U.S.A. 936 N. Main Street, Orange, CA 9867 USA T: (714) 53-167 F: (714) 53-1885 Page 10 Please contact your RLH sales representative for pricing and delivery information. Specifications subject to change without notice. Tel. 866-DO-FIBER Fax 714 53-1885 www.fiberopticlink.com