Xerox 3100MFPX 3100 MFP Guide to Faxing over IP Networks - Page 4

Network Setups IP Exchanges, Access Devices and Terminal Adapters For some installations, it may not be appropriate to provide VoIP access by using a full scale IP exchange (IP-PBX). In these cases multi-port access devices can provide a more localized service. For small or unusual network setups an Analogue Terminal Adapter (ATA) provides ultimate flexibility on a per machine basis. Many include two phone ports allowing connection of two fax machines, or one machine and one phone. Each ATA connects to an existing network point and so is convenient where phone points are not available. IP PBXs usually provide a centralized configuration utility. But each access device or ATA must be set up individually, and are generally configured to work with a VoIP registry/gatekeeper or service provider. Accurate and consistent configuration across the network is very important - the wrong configuration is often the cause of fax failure. Providers & Protocols Service providers and registry/gatekeeper servers supply directory services (called number to IP address translation), call initiation, handling and sometimes other telephony features, such as voicemail. ATAs and other access devices communicate with these servers using standardized protocols, the most common of which are SIP and H.323. Each access device and registrar/ gatekeeper must understand (and be configured for) the same protocol, as must any two end-point devices trying to initiate a fax call. For example, all parties must support SIP (or H.323) and T.38 to achieve the recommended FoIP service. RECOMMENDED ATA Xerox recommends the use of the Sagem Fax ATA 101S, when faxing with the Phaser 3100MFP device over an IP network using SIP (or H.323, when available). Additional Information Xerox Customer Support welcomes feedback on all documentation - send feedback via e-mail to: [email protected]. You can reach Xerox Customer Support at 1-800-821-2797 (USA), TTY 1-800-855-2880 or at http://www.xerox.com. Other Tips about Xerox multifunction devices are available at the following URL: http://www.office.xerox.com/support/dctips/dctips.html. XEROX®, the sphere of connectivity design, and WorkCentre® are trademarks of Xerox Corporation in the United States and/or other countries. Cisco IOS® is a registered trademark of Cisco Systems inc. and/or its affiliates in the United States and certain other countries. © 2008 Xerox Corporation. All rights reserved. dc09cc0449 Customer Support Page 4