the DS phones won't work on DT port
it just doesn't start up
but you can try to connect an DS expansion module on it
maybe it is going to work (never tryed)
this text files is with 3.0.69
IP Office ADMIN CD V3.0
This CD contains the following applications and software -
Application Version
Installation and Administration Wizard 3.0.24
Manager 5.0.69
Upgrade Wizard 5.0.69
Voicemail Lite 2.1.4
Call Status 4.0.2
System Monitor 5.0.69
IP401 Compact Office 3.0.69
Small Office Edition 3.0.69
IP 403 3.0.69
IP 406 3.0.69
IP 406v2 3.0.69
IP 412 3.0.69
POTS Module 5.0.69
POTSV2 Module 5.0.69
DCP Module 5.0.69
DCPV2 Module 5.0.69
DT Module 5.0.69
S0 Module 5.0.69
NA WAN3 Module 5.0.69
IP WAN3 Module 3.0.69
ATM Module 5.0.69
4610, 4620 Phone Firmware 2.3
4601, 4602 Phone Firmware 1.8.2
5601 Phone Firmware 1.810
5602 Phone Firmware 1.806
5610, 5620 Phone Firmware 2.3
2410, 5410 Phone Firmware 2.00
2420, 5420 Phone Firmware 4.00
CBC 2.1.23
Delta Server 5.0.23
Feature Key Server 1.0.0.5
DECT 2.0.12 and 2.0.18