US Robotics ISDN TA (Model 98005100)¶

This is an ISDN TA sold by U.S.Robotics.

In reality it seems to be designed by Stollmann E+V GmbH , which is not too surprising as many ISDN companies were based in Germany or at least Europe, while the U.S. still was mainly focussed on analog modems.

Supply Voltage	5V AC (or DC), positive pin next to RJ45
Power Consumption	~3.5W
RS232 Connector	DB-9
Line Connector	RJ45

Important AT commands¶

Setting the MSN¶

at**msn=2151
OK

Setting the B-channel protocol¶

ATB3 (HDLC)
ATB10 (X.75)
ATB13 (V.120)
ATB22 (T.70-NL)

Showing settings¶

at&v
ACTIVE PROFILE:
B10 E1 Q0 V1 W0 X4 &C1 &D2 &K3 &R1 &S0 %B0 #R0 
S00:001 S01:000 S02:043 S03:013 S04:010 S05:008 S06:003 S07:030 S16:0000H 
S90: 

TELEPHONE NUMBERS:
&Z0 = 
&Z1 = 
&Z2 = 
&Z3 = 
&Z4 = 

MSN = 2151

OK

device/firmware information¶

ati
SP ISDN
OK

ATI0
SP ISDN
OK

ATI1
64
OK

ATI2
OK

ATI3
V5.230
OK

ATI4
Sportster ISDN TA
OK

ATI5
0-DSS1
OK

ATI6
Copyright U.S. Robotics Access Corp.
OK