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Voice Gateway with FXO and FXS

Hi,

I have a scenario where CUCM-A is connected to voice gateway-1 installed with FXO card and these FXO cards are connected to FXS card on voice gateway-2 which is connected to CUCM-B.

 

I have 3 below queries please answer.

 

An IP phone which is registered to CUCM-A can call to an IP phone which is registered on CUCM-B or I need to have a FXS card on VG-1 which will connecting to FXO card on VG-2

 

An ip phone which is registered to CUCM-B can call to CUCM-A IP phone

 

I want calling to and from both the CUCM A/B ip phones

  • IP Telephony
1 REPLY
Green

Hi, 1) CUCM-A (FXO) ---> CUCM

Hi,

 

1) CUCM-A (FXO) ---> CUCM-B (FXS) Will call the dialled number in B

2) CUCM-B (FXS) ---> CUCM-A (FXO) You will need to use PLAR on the FXO and

choose an ip phone or hunt pilot for all incoming calls on A

If you want both ways to be the same you will

need to use ISDN BRi/PRI or E&M signalling which of course will

need different cards in your gateways.

You could also use IP as SIP or H323 trunks then you dont need the gateways at all.

 

Hope this helps

Regards

Alex

Regards, Alex. Please rate useful posts.
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