200 OK This CDR has been brought to you from the letters B, F, and the symbol #


TWICE in the past month, I've bumped into CDRs from SS7 equipment in
Atlanta that include alphabetic characters and pound signs in the
calling party number (ANI) field of the CDR.

One of the calls was from 5176#0B600. (That's a phone number.)

What's going on here?