Installation guide

A-18
Cisco IGX 8400 Series Installation Guide, Release 9.3.3 and Later Releases
OL-1165-06
Appendix A System Specifications
J1 Interface on the BC-J1
J1 Interface on the BC-J1
The BC-J1 is a J1 interface card for both the NTM trunk card and the CVM voice card.
Data Channel Support for HDM and LDM
This section contains interface card specifications for the HDM and LDM data cards.
Jitter: ± 50 ppm: transmit output jitter, receive jitter tolerance, and jitter
gain meet G.823.
Standards: Applicable JATE standards
Connector: Two DB-15, female
Line Rate: 2.048 Mbps, ± 50 ppm (± 200 bps VCO lock range)
Line Code: Bipolar CMI
Line Impedance: 120 ohms (balanced) or 75 ohms (balanced or unbalanced)
Frame Format: Per JJ-20.11
VF Signaling: CAS or CCS
Maximum line lengths: 100 m. Cisco supplies cable with a maximum attenuation of
7 dB /1000 ft, but the maximum cable length recommended for
this J1 interface is 100 m.
Jitter: Transmit output jitter, receive jitter tolerance, and jitter gain meet
G.823.
Electrical interface: Complies with G.703.
Connector: DB-15 female or BNC
Synchronous data
interfaces:
EIA/TIA-232C/D, EIA/TIA-449/422, V.24, X.21, and V.35
with IGX switch as DCE or DTE
High-speed rates (HDM): 2.4 kbps–1.344 Mbps
Low-speed data rates: 2.4 to 19.2 kbps per LDM port
Ports per card: LDI back card: 4 or 8
SDI back card: 4