5.18.3.4. Use Identified Calling Number for Redial 
The Swiss PTT network does not send the so-called network access digit
(0) during identification (example: 14954444, 17491212, 216318888 or
31650333, where the remote code is shown in bold).
The feature has been extended so that the identified station number
is supplemented according to the following rule:
- Starting digit sequence <> "xy" supplement calling number
with "uw" (31650333 -> 0 031 650 333).
- Starting digit sequence = "xy" remove this digit sequence; supplement
with "u" (14954444 -> 0 4954444)
Configure the remote code (starting digit sequence "xy"), the network
access digit ("w"), and the trunk group code (breakout to central office
"u") in the AMO MFCTA.
Example for network group 01 and trunk group code to central office
0: Display for 14954444: 04954444 / Display for 31650333: 0031650333:
CHANGE-MFCTA:MFCVAR=1,TYPE=MFCVAR,OPT=MISC,EXACFI=0; CHLCLTR=1, TRDISDI=0;
Example for network group 21 and trunk group code to central office
9: Display for 216318888: 96318888 / Display for 31650333: 9031650333:
CHANGE-MFCTA: MFCVAR=1, TYPE=MFCVAR, OPT=MISC, EXACFI=9; CHLCLTR=21,
TRDISDI=0;
You can also use the above examples for other countries. You should
also keep in mind the calling number modifications in the OpenScape 4000.