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[M.665] Recommendation M.665 (11/88) - Testing of echo cancellers


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Table of Contents
ITU-T Rec. M.665 - TESTING OF ECHO CANCELLERS
NOTES
TESTING OF ECHO CANCELLERS
1 Periodicity of routine tests
2 Cancellers which are permanently associated with international circuits
  2.1 Tests using the Echo Canceller Test System (ECTS) or Automatic Tra
smission Measuring Eq
  2.2 Tests using an In-Station-Echo canceller Tester (ISET)
3 Cancellers permanently associated with national circuits
4 Testing of pooled cancellers
5 Use of group-diagnostics
References

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