Operation Manual
148
Appendix A: About the AVM ISDN-Controller M1
A.1.5 The GSM Operating Modes in Comparison
Table 1 Comparison of GSM Operating Modes
A.2 Remote Equipment Supported
A.2.1 Analog Equipment
With appropriate software, the AVM Mobile ISDN-
Controller M1 can also be used as an analog modem.
The analog mode allows connections to all V.32 modems
with a data rate of 9600 bit/s.
Both FRITZ!com, the terminal module of the software
suite FRITZ! included with the Mobile ISDN-Controller
Criterion Modem V.32 ISDN V.110 Mobile ISDN
Time to connect
20 – 30 sec 3 – 6 sec 3 – 6 sec
Probability of data errors
higher (multiple
A/D conversion)
lower
(digital/digital)
lower
(digital/digital)
Data link protocol
RLP RLP RLP/X.75
Working speed
lower higher maximum
(V.42bis)
Communication control
in-band (Hayes
AT)
out-of-band
(CAPI and D
channel)
out-of-band
(CAPI and D
channel)
Background connection
control (Short-Hold Mode)
not applicable possible implemented in
NetWAYS/ISDN
and ISDN Access
Server
Calling line identification over
the D channel
not applicable possible implemented in
NetWAYS/ISDN
and ISDN Access
Server
Out-of-band call-back request
not applicable possible implemented in
NetWAYS/ISDN
and ISDN Access
Server
Prepared for future bandwidth
increase in circuit-switched
GSM (High Speed Circuit
Switched Data)
under certain
conditions
up to 38,400 bps up to 128,000 bps
(for synchronous
services)
Compatible with future
synchronous data services in
GSM
no no through future
software updates