Dial-Up Networking (DUN) (win95/98)

DUN is at the heart of all Windows 95/98 connection services. This section deals with error messages, troubleshooting & re-installation.

History & Description

I'm biased, but DUN is possibly the most flaky piece of Windows software in existence (a corrupt DUN on my own win95 system cost me about 4 continuous hours of frustration before discovery). From experience supporting an ISP, DUN in win95/98 corrupts very, very easily.

Typical signs of corruption in DUN:

mysteriously-disappearing entries
'phantom' entries (connectoids not showing in DUN yet being accessed by other communications software)

Chipset	Model	Init String	Connection Effect
Init String to Drop V.90 Modems to V34
3Com/USR	[all]	s32=98	enable V.8, disable V.90 & x2^TM
3Com/USR	[all]	&n16&u10	max 33600 min 19200
Conexant/Rockwell	[all]	+ms=11	set max V34
Lucent	LT WinModem	-v90=0s38=0	disable V.90 & K56Flex^TM
Motorola	SM56 Soft	at%b18	set max V34
Motorola	SURFR	+ms=11	set max V34
PC-Tel	HSP	s37=12	set max V34