James, I believe I was responding to Kenneth Phillips' post #9020, and my comments were directed to Kenneth, as he seems to be the apologist for Nortel's SONET gear.
I knew the answers, but I wanted Kenneth to explain to us how dark fiber and SONET is less expensive than metro DWDM. I'm still waiting for his explanation of this bizarre phenomenon.
"I don't quite understand this statement. I thought dark fiber was cheaper than fiber being used as there are no costs associated with lighting it up...no boxes on either end, no upkeep, no nothing, just the one time installation cost..."
In response to the above, dark fiber is merely installed fiber that has not yet been put to use, is transmitting nothing, and therefore has NO capacity. (Although it may have future capacity with the appropriate interfaces, which will determine that capacity). The investment for the fiber installation is finite and is a sunken cost. Therefore, the cost per unit of capacity of dark fiber is infinite.
Now, I would like Kenneth to explain to us how dark fiber and SONET gear are more cost effective than metro DWDM, particularly since metro DWDM can be used to light the fiber, and light it at significantly lower cost than SONET hardware.
Finally, it remains to be seen if Chromatis equipment will be cost competitive with Ciena's MultiwaveMetro, and MetroLite. Show me the money, Kenneth.
Jack Hutchison |
