\li Either or both of the connectors are untyped (they accept/send arbitrary senf::Packet's)
\li Both connectors send/accept the exactly same packet type.
- \throws IncompatibleConnectorsException if the two connectors are not type compatible.
+ \throws connector::IncompatibleConnectorsException if the two connectors are not type
+ compatible.
\see \ref ppi_connections
*/