Filter
Top Products
Chapter 6. Configuration
61200051L1-1D ISU 2x64 Dual Port ISDN Service Unit User Manual 39
V.25
Configuring the ISU 2x64 for V.25 bis (see Figure 6-5) enables
inband dialing over a DTE interface using asynchronous or syn-
chronous V.25 bis commands. V.25 bis can be used to establish
and end a call. Disconnecting calls can also be done from the
front panel (as described previously), from a VT 100 terminal, or
from the far-end unit.
V.25 bis dialing is used primarily by DTE with synchronous inter-
faces (HDLC/SDLC or BSC/BISYNC) not supporting the AT
command set, which is commonly used by asynchronous
devices. The ISU 2x64 supports V.25 bis inband dialing in accor-
dance with Fascicle V.III-V.25 bis (Malaga-Torremolinos 1984,
Melbourne 1988).
Figure 6-5
Dial Options, V.25 bis Menu Tree
Recommendation V.25 uses the following DCE/DTE control sig-
nals:
Transmitted Data. . . . . . . . . . . . . . . . . . . . . . . . . . . .Circuit 103
Received Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Circuit 104
Ready for Sending. . . . . . . . . . . . . . . . . . . . . . . . . . .Circuit 106
Data Set Ready. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Circuit 107
Data Terminal Ready . . . . . . . . . . . . . . . . . . . . . . . .Circuit 108/2
Calling Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . .Circuit 125
3=CONFIG
1=Netw. options
2=DTE options
3=Protocol
4=Quick setup
5=Security
6=Remote Config
1=Dial Line
2=Leased Line
1=Front Panel
2=RS-366
3=AT commands
4=V.25
5=Disabled
1=V.25 HDLC
2=V.25 ASYNC
3=V.25 BISYNC
4=V.25 HDLC FLAG
1=Switch protocl
2=Call type
3=Terminal ID
4=Busy Out
5=Dial options
6=Auto answer
7=Answer tone
8=Connect Timout
9=Call Screening
10=SBus Terminati