| Number of E1 Interfaces |
1, (+ 1 additional port for
Drop-Insert applications) |
| Conformity
(Electrical) |
G. 703 |
| Frame Structure |
As per ITU-T (CCITT) G.704 |
| Signalling |
Channel Associated Signalling, R2
Digital (R2 Gen) R2 generic in accordance with ITU-T Q.421 / Q.422 Rec. |
| PCM Sampling Rate |
8000 samples / sec. |
| Encoding Law |
A law as per ITU (CCITT) G.823 |
| Bit Rate |
2048 Kbps ± 50 ppm |
| Code |
HDB3 |
| Nominal Impedance |
120 W Balanced (75 W
Unbalanced - Option available on request |
Peak Voltage of a mark
120 W Balanced
interface
75 W Unbalanced
interface |
3.0 V ± 0.3 V
2.37 V ± 0.237 V |
Peak Voltage of a space
120 W Balanced
interface
75 W Unbalanced
interface |
0 V ± 0.3 V
0V ± 0.237 V |
| Nominal Pulse Width |
244 ns |
| Pulse Mask |
As per ITU (CCITT) Rec. G.703 |
| Output Jitter |
< 0.05 UI (in the frequency
range of 20Hz to 100 KHz |
| Permissible Attenuation |
6 dB at 1 MHz |
Return Loss at:
51.2 KHz to 102.4 KHz
102.4 KHz to 2048KHz
2048KHz to 3072 KHz |
>12dB
>18dB
>14dB |
| Jitter Tolerance |
As per ITU (CCITT) G.823 |
| Loss
and recovery of frame alignment |
As per
clause 3 of ITU (CCITT) G.732 |
| Loss
and recovery of multi-frame alignment |
As per
clause 5.2 of ITU (CCITT) G.732 |
