-5
T1 Interface
Line Rate:
1.544 Mbps,
±
50 bps (
±
200 bps VCO lock range).
Line Code:
Bipolar AMI or B8ZS.
Framing Formats:
Fractional T1, adjacent or alternating channels.
Minimum of four DS0 channels required.
Signal Level:
DSX-1 compatible.
Line Impedance:
Terminated = 100 Ohms nominal. Bridged = 1 KOhm.
Pulse Amplitude
Individual pulse amplitude 2.4 V–3.6 V (making a total
base-to-peak amplitude of 6 V
±
.6V)
Minimum Pulse Density:
Zero code suppression, either LSB or MSB.
Frame Format:
D4 and Extended Superframe (ESF).
VF Signalling:
Robbed bit D4 with A and B bits.
Max. Line Lengths:
Up to 533 feet with equalizers using ABAM cable.
Jitter Transfer:
Meets AT&T PUB 62411 specifications.
Jitter Tolerance:
Meets ANSI standards and AT&T PUB 62411 specs.
Connector:
DB 15 female.
