A very useful (short) new RFC whose full title is:
"Text String Notation for Dial Sequences and
Global Switched Telephone Network (GSTN) / E.164 Addresses"
This RFC is _authoritative_ for all Internet standards track
protocols and interfaces that use GSTN/E.164 addresses.
Available online at:
This memo describes the full set of notations needed to represent a
text string in a Dial Sequence. A Dial Sequence is normally composed
of Dual Tone Multi Frequency (DTMF) elements, plus separators and
additional "actions" (such as "wait for dialtone", "pause for N
secs", etc.) which could be needed to successfully establish the
connection with the target service: this includes the cases where
subaddresses or DTMF menu navigation apply.
- Ira McDonald
High North Inc