![](/images/flag/s/en.gif)
AT&T VOIP Nortel BCM50 Release 3.0 SIP Configuration Guide For Use with AT&T IP Flexible Reach Service Issue 0.7 12/26/2007 TABLE OF CONTENTS 1 Introduction.................................................................................................................4 1.1 Pre-IP PBX Configuration Activity....................................................................4 1.2 Customer Questions............................................................................................4 1.3 T