FXO on 2911

Posted on 2013-11-13
Medium Priority
Last Modified: 2014-01-09
I need to install an fxo card on a 2911 router for srst and fax. Is there a particular type of card and osi that is best for this?  I tried to test it in packet tracer but there is no fxo card available for that router. TY in advance for help
Question by:Jobeethemage
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LVL 20

Expert Comment

ID: 39647046
The card will work as long as you have PVDM modules installed.

Are you sure you have the right card in mind?

FXO accepts dial tone from an analog POTS line. FXS provides dial tone to devices like a fax machine, analog phone etc.
LVL 81

Accepted Solution

arnold earned 2000 total points
ID: 39647054
To simplify on the answer agonza07 provided
The options.

Telco BRI/PRI<===========>
Telco POTS <=> FXO port <=>2911 <=>FXS<=>phone/fax
                                                        <=> switch IP phones

Author Comment

ID: 39647870
we need it for fax and for srst for call manager.

Author Comment

ID: 39647960
Or maybe i can just branch off the line from the 66 block and have it going off to the fax and going off to the fsx for srst.  Sorry im a little new at this and have to learn as i go.
LVL 81

Expert Comment

ID: 39648201
For any device phone/fax you would need an FXS port/s.

You could have the fax directly connected to the telco's POTS line.

the SRST needs an outside line, which is delivered via the FXO port to the 2911.


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