Westermo IDW-90 AT - Manual (Page 11)

11 6620-3200
Examples for X.25 and X.31 calls:
ATD12345678
X.31: dial X.25 number 12345678
X.25-B: dial ISDN call to 12345678 without a specific X.25 number
ATD12345678X4000123456
X.31: ISDN number 12345678 will be ignored if X.25 number is set
dial X.25 number 4000123456
X.25-B: dial ISDN call to 12345678
with X.25 number 4000123456
ATD12345678XP64,R,O02,Nnuivalue,4000123456
X.25-B: dial ISDN call to 12345678
with packet size 64 byte
with active reverse charging
with outgoing call from closed user group "CUG" 02
with NUI selection string "nuivalue"
with X.25 number 4000123456
&D – DTR control
Selects the behaviour of the IDW-90, when the DTE control line DTR changes from
ON to OFF.
AT&D DTE control line DTR setting is ignored
AT&D2 DTR is evaluated: dropping the DTR line by the DTE will disconnect
an existing ISDN connection. An incoming call will accepted only
with DTR active. (default)
AT&D4 DTR is evaluated: Incoming calls will be accepted independent of
DTR status; DTR drop disconnects an active connection
For nearer information see also chapter 4.3 Serial status lines.