Atrie WireSpan 600, Руководство пользователя

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N x 64K
DTE / DCE
N x 64K
WireSpan 600 WireSpan 600 DTE / DCE
E1 Timing E1 Timing
E1 Network
V.35
V.35
E1 E1
Figure 1-6 E1 timing mode
z
DTE/DCE timing mode: The E1 transmit signal is
locked to the recovered DTE or DCE receive clock, as
shown in
Figure 1-7. And the other equipments must
operate on the recovered E1 clock signal. This is usually
the timing mode selected for E1-Mux. application.
Converte
r
Converte
r
DTE/DCE WireSpan 600
WireSpan 600
E1 MUX.
DTE/DCE Timing E1 Timing
V.35 E1
EIA-530
Figure 1-7 DTE/DCE timing mode
1.4 Technical Specifications
E1 Link Interface Framing
Unframed mode
PCM31 without CRC-4
PCM31 with CRC-4
PCM30 without CRC-4
PCM30 with CRC-4
Bit rate 2.048 Mbps
Line code HDB3
AMI
Line impedance Balanced interface 120 ohms
Unbalanced interface 75 ohms
Signal levels
Transmit level:
Balanced interface ±3V ±10%
Unbalanced interface ±2.37V
±10%
Receive level 0 to -36dB
Jitter performance As per ITU-T Rec. G.823
1-7