# Recommended SIP to Cellular Gateways? **URL:** \ **Category:** Ignition\ **Created:** [March 15, 2018, 12:11am UTC](https://forum.inductiveautomation.com/t/recommended-sip-to-cellular-gateways/17370 "2018-03-15T00:11:12Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![jmartell](https://avatars.discourse-cdn.com/v4/letter/j/779978/32.png) [@jmartell](https://forum.inductiveautomation.com/u/jmartell)\ **Post date:** [March 15, 2018, 12:11am UTC](https://forum.inductiveautomation.com/t/recommended-sip-to-cellular-gateways/17370/1 "2018-03-15T00:11:12Z")
One of our customers wants to have a fallback option for voice alarm notification at a remote site. Does anyone have a good recommendations for a SIP Cellular Gateway? I’ve used the Grandstream SIP to POTS gateways before and had good luck, but I can’t seem to find a similar product from them that goes directly to cellular. I’d rather not have two devices - a cell modem like a cradlepoint in front of a grandstream - if at all possible. ---
**Author:** ![Kyle\_Chase](https://avatars.discourse-cdn.com/v4/letter/k/9de0a6/32.png) [@Kyle\_Chase](https://forum.inductiveautomation.com/u/Kyle_Chase)\ **Post date:** [March 15, 2018, 12:52am UTC](https://forum.inductiveautomation.com/t/recommended-sip-to-cellular-gateways/17370/2 "2018-03-15T00:52:59Z")
Use one of the Twilio modules? ---
**Author:** ![jmartell](https://avatars.discourse-cdn.com/v4/letter/j/779978/32.png) [@jmartell](https://forum.inductiveautomation.com/u/jmartell)\ **Post date:** [March 16, 2018, 12:17am UTC](https://forum.inductiveautomation.com/t/recommended-sip-to-cellular-gateways/17370/3 "2018-03-16T00:17:37Z")
I was a bit unclear: they want a fallback option in case the internet connection fails. As far as I can tell the Twilio modules require internet access in order to function, correct?