Tones

[S...@sri-csl.arpa]

In reply to Kremen@Aerospace's questions about the three tones
heard on the beginning of intercept recordings;

1) Are these tones different for different types of messages?

2) Is there a code behind the tone sequence? If there is, what is the
code or where can if find a listing for it?

3) What is the official purpose of the tones? Can the be recognized by a
Touch Tone (tm) ?

1> No, the three tones you hear are the same for all recorded
announcement messages.

2> No and no.

3> The official purpose of the tones is to allow the Service Evaluation
System's ( a system that measures network performance ) call classification
terminal to interpret the sound into a "call intercepted" message.

ssr