How Fix iChat with Brighthouse Cisco 585LRE Modem?

I have a client with a new Macbook. She is in Florida. At a hotel, her iChat (video conferencing) worked fine.

At her new apartment, which is serviced by Brighthouse DSL using a Cisco 585LRE modem, her iChat does not work. Does anyone know why not? Does Brighthouse block the necessary ports? If so, can I open them on this modem, and if so, how?

Thanks.
JayneCobbAsked:
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JayneCobbConnect With a Mentor Author Commented:
Apparently no one has a solution for this issue.
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JayneCobbAuthor Commented:
Anyone? Buehler?
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