User`s manual

U.S. Robotics I-modem Command Reference
Appendix A: Alphabetic Command Summary • Page A-31
*W=n Set the switch protocol used telephone companyÕs central ofÞce.
2 V.110 rate adaption only
3 Modem or fax only
4 Clear-channel synchronous
5 Asynchronous to synchro-
nous PPP conversion
n Switch Protocol Type
0 A
T&T 5ESS Custom
1 Nor
thern Telecom DMS-100
2 National ISDN-1
3 National ISDN-2
n Call Type