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For the discussion of ISDN (Integrated Services Digital Network) - Which is 3 to 5 times faster than analog dial-up.
 TopicReplies/uniqsLast Post
topicChecking ADSL connectivity on telephone station by pulsar777-/250513th Oct 2013
topicISDN service by Gotendo-/2857Gotendo : 26th Aug 2013
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