RV50 remote access to device behind modem

Hi all,

We have purchased a handful of RV50 modems on the used market. We have one on AT&T. We have a static IP through ATT under the i2gold APN.

We are connecting a Cisco 2911 VoIP router (Radio over IP/PTT) to the modem. We are able to trunk to our servers. However, I am unable to ping that static IP from the public internet. We are also unable to connect via browser or SSH to that address either.

Please bear with me, as I’m new to Sierra Wireless products, but could use some help, as this will probably take over many remote landline connections (i.e.: T1) if we can get it to work.