Specifications

1
Annexure-V
SPECIFICATION FOR NETWORK CABLING
1. The LAN segments are proposed to be set up at Chandigarh, Nangal, Dhulkote, Slapper & Delhi.
The bidder, if so desired, may visit the sites of BBMB at his own cost before submitting the bid.
The approximate quantity of networking components has been worked out.
2. TESTING
The entire network & networking shall be thoroughly tested to ensure that the as-built
performance meets the requirements specified herein and such other specifications referenced
either explicitly or implicitly herein.
Installation testing shall be carried out in accordance with a formal test plan submitted to BBMB.
Test results shall be forwarded to BBMB, highlighting all anomalies, to demonstrate that the
performance of the installed cabling is satisfactory. Inspection and testing of these parameters by
BBMB, or waival thereof, does not relieve the Contractor of responsibility for testing the
parameters listed.
The testing shall be as per AVAYA or equivalent standards. If network is tested for certification
other than AVAYA, then the ‘Testing’ shall be as per approved/recognized test procedures
(TIA/EIA standards).
The testing may generally include the following:
Test Specifications
UTP Cabling
The Contractor shall perform the following tests and calculations for LINK SPECIFICATIONS &
CHANNEL SPECIFICATIONS upon new cabling at completion of the installation. All testing is to
be completed with a standard field tester.
i) Wire map test c/w Continuity, polarity and pair assignment of all pairs in a cable run;
ii) Length;
iii) DC loop resistance;
iv) Attenuation;
v) Near end crosstalk (NEXT) loss;
vi) Attenuation/Crosstalk Ratio (ACR);
vii) Power sum near end crosstalk (PSNEXT) loss
viii) Equal level far end crosstalk (ELFEXT);
ix) Power sum equal level far end crosstalk (PSELFEXT);
x) Return loss;
xi) Propagation delay;
xii) Propagation delay skew.
The above list of tests is only indicative and may include more tests as per the requirements.
The test limits shall be as specified by AVAYA.
Optical Fibre Cabling
The Contractor shall perform the following LINK SPECIFICATION tests and calculations upon all
new cabling at completion of the installation. Transmission characteristics should be recorded
using a recording optical TDR.
a. Length;
b. Multimode modal bandwidth (at 850nm and 1300 nm) for multimode cables;
c. Singlemode modal bandwidth (at 1310nm and 1500 nm) for singlemode cables;
d. Propagation delay;
e. Optical attenuation (Link loss);
f. Return loss;
The measurement method employed for optical fibre cabling shall provide a measure of the loss
at the point of interconnection between the test lead and the OF cable at each end and shall be
submitted to BBMB for approval prior to commencement of testing.
The test limits shall be as specified for Optical fibre links by AVAYA.
Witnessing of Sample Tests
BBMB may require that its representative witnesses samples of the specified cable tests at
random. The choice and selection of the sample cable runs to be witnessed shall be at the sole
discretion of BBMB or its representative. All such tests shall be approved by BBMB before the
completed installation is accepted.