FXS to FXO

[Natha340Mai340]

Hello people,

I'm newer inside Cisco voip and I wonder it's possible do an communication between FXS and FXO ?

I have two router device one with FXS Interface witch has a analog phone pluged and other router has a PABX that supplies FXO Interface.

I need do called between each other, it's possible ?

if someone has an tip about how to please post here or any doc about

thanks

[Jonathan Schulenberg]

Yes it's possible. Simply a matter of dial-peers. Related reading:

http://www.cisco.com/en/US/tech/tk652/tk90/technologies_tech_note09186a008010fed1.shtml

http://www.cisco.com/en/US/tech/tk652/tk653/technologies_tech_note09186a00800ae2d1.shtml

Here's an overly simplified config example. There are many additional command options but this gets the ball rolling:

!The FXO port
voice-port 0/1/0 
!Where you want the router to direct incoming calls
connection plar opx 1234
caller-id enable 
!The FXS port
voice-port 0/2/0
station-id name Example 
station-id number 1234
dial-peer voice 100 pots 
destination-pattern 
port 0/1/0 
dial-peer voice 200 pots
destination-pattern 1234
port 0/2/0

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[Natha340Mai340]

Hello,

Thank you Jonathan for your tip.

I had done a test but unsuccess. I don't know why but my Interface FXO seems no detect the ring pulse because when into a call from my PABX to the extention it's pluging in that FXO nothing happen.

I think there is some tuning to do at the configuration about ring, pulse, etc. but I don't know where neither how to

any tip about how to tuning that it's welcome.

thanks

[Natha340Mai340]

Hello,

Sorry my persistence about that issue below follow parts of configuration and a draw.

My problem is when the call come from of extention 21 ( FXO ) to extention 2000 ( FXS ) of course numer dialer is 20 ( number of extention PABX ) but nothing happen on router A. when I turn on debug nothing appear! I Think should shows anything on console but nothing. so I wonder what is happen ?

When the call come from FXS interface to FXO it's work!

any tip about is welcome

Configuration on Router A

voice-port 0/1/0

connection plar opx 2000

caller-id enable

dial-peer voice 100 pots

destination-pattern 21

port 0/1/0

dial-peer voice 101 voip

destination−pattern 2000

dtmf−relay h245−alphanumeric

session target ipv4:10.80.80.1

Configuration on Router B

voice-port 0/2/0

station-id name example

station-id number 2000

cptone BR

supervisory disconnect signal

dial-peer voice 200 pots

destination-pattern 2000

port 0/2/0

dial−peer voice 201 voip

destination−pattern 21

dtmf−relay h245−alphanumeric

session target ipv4:10.80.80.2

[Jorge Armijo]

Hi,

Please capture the following debugs on both routers for the not working call:

deb voice ccapi inout

deb vpm signal

deb h225 asn1

Do "term mon" and/or "logging console" and capture the output.

--
Jorge Armijo

Please remember to rate helpful responses and identify helpful or correct answers.

[Natha340Mai340]

Thank you Jorge I'm going that test on friday and come back here next week.

thanks