Call redirection
The internal protocol between TP4s
is not X.25 or X75, but UKas own protocol, this protocol has extended format
information. If caller is not extended format the called address will not be
included in the call accept packet, so calls from a not extended port cannot
be redirected as the caller cannot be informed of the change of address.
The tables can be built so that Call redirection is done on:
- link failure, or,
- all LCNs busy.
normally the tables are built for redirection on link failure only.
See also:
