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magnetra
Joined: 21 Apr 2005
Posts: 260
Helped: 3
Location: 27.45N, 85.20E KTM, NP
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 02 Jul 2006 17:34 T1 - E1 |
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| USA uses T1 digital hierarchy where as Europe uses E1 hierarchy. How are two systems linked for international communication?
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vinci.
Joined: 26 Apr 2006
Posts: 15
Location: south P
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| 29 Jul 2006 7:07 Re: T1 - E1 |
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for instant devices: Rad Data Communications DXC-2
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magnetra
Joined: 21 Apr 2005
Posts: 260
Helped: 3
Location: 27.45N, 85.20E KTM, NP
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| 29 Jul 2006 13:05 T1 - E1 |
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Could you be a little more descriptive?
M
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vinci.
Joined: 26 Apr 2006
Posts: 15
Location: south P
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| 29 Jul 2006 14:27 Re: T1 - E1 |
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| most important in converter is- control of buffer because devices in the both sides wants fluxation in this same real time, clock gives several possibility of tacts, there must be change code from HDB3 to AMI, change framing G.704 to D4, impedance etc.
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vinci.
Joined: 26 Apr 2006
Posts: 15
Location: south P
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iransatforum
Joined: 04 May 2004
Posts: 165
Helped: 9
Location: Sorrow-Land
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| 31 Jul 2006 20:18 T1 - E1 |
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Similar to the North American T-1, E1 is the European format for digital transmission.
E1 carries signals at 2 Mbps (32 channels at 64Kbps, with 2 channels reserved for signaling and controlling), versus the T1, which carries signals at 1.544 Mbps (24 channels at 64Kbps). E1 and T1 lines may be interconnected for international use.
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omidgold
Joined: 05 Jun 2006
Posts: 86
Helped: 3
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| 04 Aug 2006 11:56 T1 - E1 |
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e1 has 32 time slot and t1 has 24 but they frames repeat each 125 us so with buffering chaneg them
of cource coding of linr from hdb3 chang to bz8s too
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tnerber
Joined: 13 Sep 2004
Posts: 14
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| 25 Aug 2006 1:45 Re: T1 - E1 |
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| Long haul transport will use Fiber Optics.
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