Hi John Thought I would just add a few words from 'T1 A survival guide' from O'Reilly.
T1 = DS1 delivered over a 4 wire copper interface DS1 = Digital Stream level 1 - 24 DS0's combined into a DS1 which supplies 1536 kbps connectivity plus 8 kbps framing and signalling overhead for a total of 1544kbps. DS0 = A single 64kbps channel. p149 - "Each time slot in the T1 has the capacity to support one traditional telephone call. Channelised T1 does exactly this - each of the 24 time slots can be treated as a digital telephone line. Each line has a 64kbps raw capacity, but since a byte must be used for signalling the maximum thoughput of a cT1 channel is 56kbps. On ther otherhand unchannelised T1 simply views each time slot as the opporunity to send another 8bits of data to the remote end and the enite capacity is one big pipe." p163 - Configuring cT1...Individual DS0's may be configured for different purposes. Some may be used for voice, some for data and different time slots may use different types of signalling. The book itself concentrates on unchannelised T1 and has been a great help to me over the past months working in the States, since in Europe we have simple E1 Regards MFC Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=47928&t=47844 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
