A schematic of the test setup is described in the following figure.
The OTDR was rented from Russell Kalalau of TeleCable Systems in Kona, 325-5516.
A summary of the OTDR Results is attached. It is recommended that facilities with more than one bad fiber have the broken fiber fixed.
There is a set of hot spares located at Hale Pohaku. The CNX 600 hot spare is configured and ready to be booted up in case the CNX 600 at HP has failed. The spare is located in the same rack as the operational one. Instruction on the switchover will be available in the Trouble Shooting Guide shortly.
Hawaiian Tel is dividing the fiber project on the Big Island into three segments.
Following discussion, the Working Group concluded that we should ask HawTel to implement ATM.
The committee discussed the following report, which was presented at the 1995 Mauna Kea Users' Meeting.
In order to accommodate Gemini, the existing spur road between the UH 88" and the CFHT sublease boundary will be relocated to the east as shown in Figure 1. The power and communications ducts will be upgraded and rerouted as shown in Figure 2. Four 4-inch communications ducts will be installed from the Electrical Building to Handhole Group 16 (HHG 16) adjacent to CFHT. The intended duct assignments are:
New copper telephone cable and MKOCN fiber optics cables will be pulled from the Electrical Building to HHG 16, where they will be spliced to the existing cables to CFHT, IRTF, Keck and Subaru. The contractual specifications require that service interruptions be limited to two intervals no longer than six hours each for electrical power and one interval no longer than six hours per affected facility for communications. Advance notice will be given for service interruptions.
During discussion, it was agreed that the most difficult aspect is the switchover at the Electrical Building. The contractor is required to present a detailed plan for this activity, which should be reviewed by the Working Group.
Further upgrading of the summit power and communications distribution system will be accomplished as part of the Smithsonian Submillimeter Array (SMA) infrastructure work. The details are still being worked out, but the goal is to bring the distribution system serving "millimeter valley" up to the same standard as that described above for the summit ridge. In addition we plan to "close the loop" by extending the duct system from SMA to Subaru. This will provide both redundancy and greater flexibility in the distribution system.
This section was provided to just remind participants that ATM is a cell switched service whereas SONET is circuit switched, which is less flexible in terms of bandwidth allocation.
There are two password within the MKOCN Mosaic pages. Please send Tjet Sun e-mail for further information.