We implemented this project for MA 330 Redundancy. We have 2 BTSs located at 2 different locations. If there is a fiber cut to a MA 330 remote, how do we connect the BTS back to the MA 330 remote. We leveraged the redundant fiber run between the BTS locations to get this done. This is not a true Fiber Cross Connect, but that's the name Sprint PMs used.
Current Fiber Layout:
Current Fiber Layout:
- Each MA330 location is fed with a 12SM fiber from both BTS locations at CAB and North. Since there is a MA 330 in Shoenberg, we have a 12 strand SM fiber from the MA330 in North to the BTS location at CAB. Therefore 12 Strands of SM Fiber between the data centers are present.
- Each MA330 is connected back to the BTS location at CAB and North with the exception of the MA330 at North, which should be in the same location as the BTS.
- Not all the buildings have dual routes (i.e., entrance). The MA 330 locations that have dual entrances are CAM, SLCH, Southwest Tower, BIH, and Barnes Jewish South.
- Primary Fiber Connection: the active fiber run between the main MA 330 (at Primary BTS location) to remote unit (remote head-end).
- Primary BTS location: for a MA 330 link wherever the main MA 330 is located.
- Secondary BTS Location (for a MA 330 link): this is the BTS location where a MA 330 (main) is not located. So for example, if the Northwest Towers Main MA 330 is located at the North (i.e. Shoenberg) location then the Secondary BTS location for NWT MA 330 link is the CAB Data Center.
- Secondary or Redundant Fiber Connection: this is the redundant fiber link that connects a Main MA 330 to Remote MA 330, but via the fiber cross connect located at the Secondary BTS location. The objective of this SOW is to build out the Secondary or Redundant fiber connections for all MA 330 links.
SOW:
- Map, and label dedicated fiber strand (1 Single Mode Fiber) from Remote Head-end to Secondary BTS Location. So for example, if the primary connection between Maternity and CAB gets cut, by connecting the Redundant jumper on both MA330 ends we will establish a secondary connection which goes from Maternity to Shoenberg, and then to CAB .
- Connect the jumpers at the Secondary BTS location so that there becomes one continuous connection from remote head-end to Secondary BTS location, back to Primary BTS location.
- Take the redundant jumper to the MA 330 locations (at both Main and Remote ends), so that they are hanging next to the 330 units.
- Test and confirm the alternate link for an optical budget of 9 dB or less (loss). This test can confirm the loss, but cannot guarantee 9 dB of optical budget. Manage the vendor to test the Sprint recommended back reflectance.
- Test one alternate line from 1 remote head-end to the BTS head-end.
- Coordinate and interface with TFC appointed fiber vendors to install all the redundant fibers.
- Clearly label all fiber jumpers, & panels and provide maps of cross-connect.
- This SOW assumes that TFC will provide all redundant fibers as well as jumpers and miscellaneous hardware required for this plan.
Block Diagram:
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