Toshiba Libretto U100 - Manual (Page 219)

User’s Manual D-7
S-registers
*1: EC only appears when the Extended Result Codes configuration option
is enabled. EC is replaced by one of the following symbols, depending
upon the error control method used:
V.42bis - V.42 error control and V.42bis data compression.
V.42 - V.42 error control only.
MNP 5 - MNP class 4 error control and MNP class 5 data
compression.
MNP 4 - MNP class 4 error control only.
NoEC - No error control protocol.
*2: In some countries/regions, these result codes may not appear.
DELAYED*
2
88 Delay is in effect for the dialed
number
BLACKLISTED*
2
89 Dialed number is blacklisted
BLACKLIST FULL*
2
90 Blacklist is full