Hello... I am sure someone up there knows something about 5ESS and portmaster 2. Our local teleco does not seem to know what SPID is. As far as I know according to the livingston manual, I should set up SPID in order to use ISDN.(well actually it is not true for switch type NTT.) I even call the company who sold the 5ESS to the teleco, Lucent Techonologies, Japan, they could not help us all. According a field engineer, he has never heard of it. He looked up the manual, he could not find SPID. Now this bring me to ask someone in this group. 1. What SPID is called in teleco lingo? 2. what switch types are capable with lucent 5ESS? 2.1 why can I find out which switch type we are really getting? 2.3 all I know from the teleco is their telecom "machine" is called 5ESS. 2.4 They believe 5ESS is the switch type but ... 3. what network layer does this SPID setting is used? 3.1 any more info on this SPID on ITU 400s ? 4. Does anyone use portmaster 2 with BRI on 5ESS switch type? 5. Any direct number to lucent Techologies that I could ask some questions about SPID and 5ESS stuff? 6. Any suggestions? sincerely yours, Tatsuya = = = = = = Business Network Telecom (BNT) ビジネスネットワークテレコム株式会社 〒111-0053 東京都台東区浅草橋3-8-5 31山京ビル6階 TEL 03-5687-3945 FAX 03-5687-6009 http://www.giganet.net