VoIP Hacks: Tips & Tools for Internet Telephony by Theodore Wallingford This errata page lists errors outstanding in the most recent printing. If you have technical questions or error reports, you can send them to booktech@oreilly.com. Please specify the printing date of your copy. This page was updated June 21, 2006. Here's a key to the markup: [page-number]: serious technical mistake {page-number}: minor technical mistake : important language/formatting problem (page-number): language change or minor formatting problem ?page-number?: reader question or request for clarification Confirmed errors: [43] hack 43; The author seems to be incorrect in stating that the CG-200 supports two FXO lines. According to the manufacturer's literature, it only supports one. Also, the screen shots given do not match this device at all. Perhaps the author only tested the CG- 400 and assumed that the CG-200 was the same. But it does not appear to be. AUTHOR'S REPLY: Confirmed. However, the hack can be accomplished as written since only a single FXO interface is required to demonstrate the desired outcome of the hack. The screenshots are from the web interface of a Clipcomm CG-410, not sure of the firmware revision. (163) First Paragraph After Heading "First Things First"; The 4th line of the paragraph after the heading "First Things First" on page 163 reads: "If you pick up your telephone, you should here a dial tone." The word "here" should be spelled "hear".