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Kris Garner
Beginner

What is the maxium distance for analog FXS ports?

Hello,

I have a customer that has phones that are 2.2 miles away on their campus.  We're positioning a C3945-112FXS gateway .  Will the FXS ports support a phone at this distance?  What is the max distance it can support?

Thank you in advance.

1 REPLY 1
paolo bevilacqua
Hall of Fame Master

That 'may' work, but is already outside specifications.

http://www.cisco.com/en/US/prod/collateral/modules/ps5365/product_data_sheet0900aecd801c595e.html

table 6

the regular FXS are made on-premise se only. the VIC3-2EXFS allows a longer disyance

Table 7.

You should install the device close where the phones are.

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