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Zhone Technologies, Inc. IMACS Product Book, Version 4
March 2001 Page 61
Table 18—BRI Card Specifications (continued)
B-Channel Mode None, B1, B2, B1+B2, or 128 kbps
D-subchannel None, 1, 2, 3 or 4 (used for BRITE mode)
Sealing Current Off or On per port (Models 826361 and 826171 only)
Design Standards for Models 826070 and 826171
ANSI T1.601 ISDN Basic Access Interface for Use on Metallic Loops for
Application on the Network Side of the NT (layer 1
Specification) 8261, 8263
ANSI T1.602 ISDN Signaling Specification for Application at the User-
Network Interface – Layer 2 Specification
ITU-T I.430 ISDN, Basic User-network Interface - Layer 1 specification
TR-NWT-000397 ISDN Basic Access Transport System Requirements
GR-000303 Integrated Digital Loop Carrier System Generic Requirements,
Objectives and Interface
Design Standards for Model 826270
ANSI T1.605 ISDN Basic Access Interface for S and T Reference Layer 1
Specification
ITU-T I.430 ISDN, Basic User-network Interface, Layer 1 specification
TR-NWT-000397 ISDN Basic Access Transport System Requirements
GR-000303 Integrated Digital Loop Carrier System Generic Requirements,
Objectives and Interface
The following is a summary of the general requirements of the LULT and LUNT as described in the TR-NWT-
000397.
Function LULT LUNT Notes
DSL master transceiver (2-wire U interface) Yes ANSI T1.601.1992 & TR-393
DSL slave transceiver (2-wire U interface) Yes ANSI T1.601.1992 & TR-393
Sealing current source Yes
Sealing current termination
DC Test Signature Yes Yes ANSI T1.601-1992
Metallic Test Access Yes TR-476
Loop backs Yes Yes
6. DSO-DP
The 825460 DSO Data Port/G.703 Data Unit (DSO-DP/G.703) is a plug-in user card for the system. The DSO-
DP/G.703 provides a 64 Kbps interface to a DSO of a T1/E1 network. The card supports four (4) ports which
provide a 64 Kbps interface to a DSO on a T1 or E1 WAN link. Each DSO-DP/G.703 card can be installed in any
User Slot and provides four (4) DB15 female connectors.
The DSO-DP/G.703 card can be programmed to operate in either DSO-DP mode or in G.703 mode. In G.703 mode,
the card supports either co-directional or contra-directional operation and this option can be set on a port-by-port
basis. In DS0-DP mode, in addition to Transmit Data and Receive Data, the card can be programmed to either
provide a 64 Kbps bit clock and an 8 kHz byte clock to the attached device or to receive those two clocks from the
attached device.
In G.703 Co-Directional mode, the Transmit Data and Receive Data leads are supported. The clock information and
the data make up a composite signal and the clock must be derived from the data stream. In G.703 Contra-
Directional mode, the port provides separate Transmit and Receive Clocks to the attached device. Both clocks are
64 Kbps clocks with embedded 8 kHz Bipolar Violations (BPVs) to mark the byte boundaries.