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Reflections & multiple tail circuits

Started by Mark Antony September 14, 2002
Hello,
I have one question regarding 2, 3 or more
reflections and multiple tail circuits.

Is the double reflections or three reflections overall
can be called as single tail circuit?
Or
Can we consider 3 reflections as 3 small dispersive
regions in a echo path added to form a multiple tail
circuit?

1 Reflection can be considered at the hybrid( 2 wire
to 4 wire junction).
What could be the source of multiple reflections?

Regards,
Camara



If you are refering to the multiple tail circuits listed in ITU Recommendation
G.168, these are indeed separate reflections. These represent reflections from
multiple hybrids or interfaces. Those listed for North America were actually
measured reflections when multiple connections were used to complete a circuit.

Other multiple connections can occur in todays environment when subscribers are
added to connection to make a 3-way or 4-way conference call, and the conference
is not originated from a single source. Maurice Givens

---------- =?iso-8859-1?q?Mark Antony?= <> writes:

From: =?iso-8859-1?q?Mark Antony?= <>
To:
Subject: [echocancel] Reflections & multiple tail circuits
Date: Sun, 15 Sep 2002 01:18:00 +1000 (EST)

Hello,
I have one question regarding 2, 3 or more
reflections and multiple tail circuits.

Is the double reflections or three reflections overall
can be called as single tail circuit?
Or
Can we consider 3 reflections as 3 small dispersive
regions in a echo path added to form a multiple tail
circuit?

1 Reflection can be considered at the hybrid( 2 wire
to 4 wire junction).
What could be the source of multiple reflections?

Regards,
Camara

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