Installation guide

A-14
Cisco IGX 8400 Series Installation Guide, Release 9.3.3 and Later Releases
OL-1165-06
Appendix A System Specifications
T1 Interface on FRI Back Card
T1 Interface on FRI Back Card
The BC-FRI-T1 is the T1 interface for the FRM Frame Relay card.
E1 Interface on BC-E1 Back Card
The BC-E1 is the E1 interface card for both the NTM trunk and the CVM voice card.
Bundled connections: 252 virtual circuits per card
1024 virtual circuits per node
Billing time accuracy: Upon request from a user-device, an IGX node provides GMT
from any node accurate to within one second.
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 2.4–3.6V (making a total base-to-peak
amplitude of 6V ± 0.6V)
Minimum Pulse Density: Zero code suppression, either LSB, MSB or B8ZS
Frame Format: D4 and Extended SuperFrame (ESF)
VF Signaling: Robbed bit D4 with A and B bits
Max. Line Lengths: Up to 533 ft with equalizers using ABAM cable
Jitter Transfer: Meets AT&T PUB 62411 specifications.
Jitter Tolerance: Meets ANSI standards and AT&T PUB 62411 specifications.
Connector: DB-15 female
Line rate: 2.048 Mbps, ± 50 ppm (± 200 bps VCO lock range)
Line code: Bipolar AMI or HDB3
Line impedance: 120 ohms (balanced) or 75 ohms (balanced or unbalanced)