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found that there were telecom equipments live and functioning. There were four ISDN DRI lines from Mambalam exchange connected through Siemens make ... also there was one ISDN PRI lines extended from Mambalam Exchange through RAD make HSDL Modem. They also found that instead of connecting PRI line

service matrix (CATV/IP TV, VoIP, Internet, 3G, Wi-Fi, GSM, PSTN, ISDN, ISD/STD, ADSL 2+ Payphone , Video IP Phones, Video conferencing , Broadcasting, CCTV ... critical requirement of OC. 8. Unit Rate pricing for services like PSTN, ISDN, VoIP/Centrex, Conferencing, Internet Services, Primary MPLS data

petitioner in brief is as follows : The petitioner was a subscriber of ISDN PRI line with consumer No.6249595 in BSNL Malappuram SSA with telephone

services they provide."10 There are protocols like ISUP (ISDN user part), SCCP (Signaling Connection Control Part), etc. "ISUP is the protocol used

exchange for PSTN (Analog) as well as ISDN subscribers. It is therefore, in the nature of an objective type question and if all five

arrangement between the assessee and Tata Motors the assessee has to install ISDN Line from local Telecom Service Provider. Therefore, the payment made