Can I use the fxo ports on VG450 for IP Phone to PSTN calling

[dwayne rattan]

Hi

I noticed that the new generation VG450 can have high density voice service modules that include both FXS and FXO.

I have a customer with CUCM that has a large amount of FXO lines on a legacy PBX and was wondering if the VG450 would be able to connect the lot of them and allow for the IP phones to use them like any other voice router to make and receive PSTN calls ?

At this point I dont have the option to migrate them to T1 or SIP.

[Jonathan Schulenberg]

The data sheet states that you can:
https://www.cisco.com/c/en/us/products/collateral/unified-communications/vg450-analog-voice-gateways/datasheet-c78-741460.html

[dwayne rattan]

I was able to get clarity on this turns out that the ports that are used for bypass fxo can only be used during a power failure and is not available during normal operation. The thing is if you are looking for a high density card and choose the 8fxs and 12 fxo (SM-X-8FXS/12FXO) only 4 ports can be used during normal operation. I find this to be wasteful