As per documentation, I provisioned my ISDN line for a P-75 (5.1Ap4) using the basic "S1" code and (I think) everything behaved pretty much as described on page B-3 of the User's Guide, "How incoming voice calls are handled." In particular, when I used the router to dial my ISP, log on and get email, surf, etc... the (analog) phone plugged into the POTS would ring if that number received a voice call. Unfortunately, I didn't get call forwarding as wanted. Ascend support said the "U" code would also work for the P-75 and supported premium calling features over the POTS jacks. So, I called Ameritech, tried to make sure that the only difference would be added features, and changed to "U". Now, a voice call to the primary number gets a busy signal if I'm connected to my ISP (one channel) and call forwarding _still_ doesn't work. Ameritech is saying everything is behaving exactly as it should at the switch. I found the following differences between the S1 configuration and what I have now with, supposedly, the U (National/NI-1 5ESS switch, by the way). Circuit Switched Data (CSD) S1=2, U=1 CSD limit S1=2, U=1 CSD Notification Busy (NB) limit S1=1, U=blank (?!?!?) Would this account for the changes I've seen in the way incoming voice calls are handled? Are there any Ameritech customers out there who have been here/done this - been able to get call forwarding with analog phone on P-75 POTS? thanks. jeff ++ Ascend Users Mailing List ++ To unsubscribe: send unsubscribe to ascend-users-request@bungi.com To get FAQ'd: <<A HREF="http://www.nealis.net/ascend/faq">http://www.nealis.net/ascend/faq</A>> </PRE> <!--X-MsgBody-End--> <!--X-Follow-Ups--> <!--X-Follow-Ups-End--> <!--X-References--> <!--X-References-End--> <!--X-BotPNI--> <HR> <UL> <LI>Prev by Date: <STRONG><A HREF="msg10692.html">(ASCEND) MPP on Pipeline 50</A></STRONG> </LI> <LI>Next by Date: <STRONG><A HREF="msg10690.html">Re: (ASCEND) 5.0ap33 CRC and Routing problems</A></STRONG> </LI> <LI>Prev by thread: <STRONG><A HREF="msg10689.html">(ASCEND) Update Distribution List</A></STRONG> </LI> <LI>Next by thread: <STRONG><A HREF="msg10692.html">(ASCEND) MPP on Pipeline 50</A></STRONG> </LI> <LI>Index(es): <UL> <LI><A HREF="maillist.html#10691"><STRONG>Main</STRONG></A></LI> <LI><A HREF="thrd239.html#10691"><STRONG>Thread</STRONG></A></LI> </UL> </LI> </UL> <!--X-BotPNI-End--> <!--X-User-Footer--> <!--X-User-Footer-End--> </BODY> </HTML>