mgcp: Document a difference between RFC 3550 and this code

Explain why this code deals with only one source and that this is
a limit of some equipment (e.g. the nanoBTS).
1 file changed
tree: 5c9db3c717fa07259d032a12b22fba994ceab7de
  1. debian/
  2. hlrsync/
  3. linux-kernel/
  4. openbsc/
  5. wireshark/
  6. README