Technical data

TraverseEdge 2020 Applications and Engineering Guide, Chapter 2: System Features
Release 5.0.x Turin Networks Page 2-11
2.5.1 TSC/RTU - DTAU Feature Requirements
Designation of Test Access Ports
The TE-2020 supports provisioning of DS1 and DS3 port pairs as TAPs. Tellabs’ implementation of this
capability is to add parameters to the ENT-T1 and ENT-T3 commands to designate specific T1 and T3
AIDs as TAPs.
TL-1 Control of DTAU Function
The DTAU function works for all 1-way or 2-way connections point-to-point connections carrying any
DS1 or DS3 payloads. It is an objective to support DTAU for point-to-multipoint connections. In the
future this feature may be enhanced to include STS-n(c) circuit testing which would require and OC-n
TAP. The requirements of such an OC-n TAP, however, are outside the scope of this document.
The TE-2020 supports control of the DTAU function via TL-1 from a 3
rd
party TSC/RTU system (e.g.,
Spirent BRTU). Table 2-1 includes list of such commands. This list should be relatively close to the
actual implementation required but is subject to change as interoperability discussions continue with TSC/
RTU vendor(s).
Table 2-1 Integrated Test Access Related TL-1 Commands
R.R4.1NE.TAP.1 A TL-1 command to designate a given DS1 port as a TAP with a specific TAP number
(integer number between 0 and 999 per GR-834 Appendix C)
R.R4.1NE.TAP.2
The TE-2020 DTAU function supports a Dual T1 TAP (referred to as DFAD in GR-
818 sec. 6.2) for full-split access; uses even/odd consecutive integer TAP numbers for
DFAD port pair identification
R.R4.1NE.TAP.3 A TL-1 command to designate a given DS3 port as a TAP with a specific TAP number
(integer number between 0 and 999 per GR-834 Appendix C)
R.R4.1NE.TAP.4
The TE-2020 DTAU function supports a Dual T3 TAP (referred to as DFAD in GR-
818 sec. 6.2) for full-split access; uses even/odd consecutive integer TAP numbers for
DFAD port pair identification
R.R4.1NE.TAP.5 DTAU capability is supported for uni-directional and bi-directional point to
point circuits carrying DS1 or DS3 payloads
O.R4.1NE.TAP.6
DTAU capability is supported for uni-directional point to multipoint (Drop and
Continue) circuits carrying DS1 or DS3 payloads
CONN-TACC-T1 Identifies the T1 circuit to be tested, the TAP to be used, and indicates the type of
test (monitor or split for equipment, facility or both) to be performed
CONN-TACC-T3 Identifies the T3 circuit to be tested, the TAP to be used, and indicates the type of
test (monitor or split for equipment, facility or both) to be performed
CHG-ACCMD-T1 Identifies a specific T1 TAP and indicates a change of access mode (monitor or split
for equipment, facility or both)
CHG-ACCMD-T3 Identifies a specific T3 TAP and indicates a change of access mode (monitor or split
for equipment, facility or both)
RTRV-TAP-T1 Retrieves the status of a T1 TAP