You are exactly right. Cat 5 had no advantage over cheaper wire for voice, and the length limitations are meaningless. Consider that Cat 5 is typically use with signals that extent to 30 MHz or beyond. A voice grade analog circuit must go to 4 KHz (1/10,000 as much). At 4 KHz, the wire generally doesn't even act like a controlled impedance.
Wilton From: [email protected] [mailto:[email protected]] On Behalf Of David Gibbons Sent: Tuesday, May 26, 2009 8:50 AM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] Maximum cable length for analog phone from FXS port I could be wrong but I don't think the cat5 limit of 100 meters applies to any analog signaling over that copper. I believe it only applies to Ethernet signaling. -Dave
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