INSYS, Modem, models:

336 4.1	Operating Manual
56k Small INT 2.0	Operating Manual
56k small EU 2.1	Manual
ADSL 1.1	Manual
GSM 4.3 I4	Manual
GSM 4.3 easy	Add-On Manual
MoRoS	Quick Installation Manual
Modem 336 LL 2D/4D 5.x Originate / Answer	Manual
i-modul 336 LL	Add-On Manual