I personally can't speak to 3rd party FXS gateways, but I've worked with customers in the past whose VG224s were integrated w/ CUCM via SIP trunk. The two caveats that immediately come to mind are applicable to a non-Cisco FXS gateway using SIP as well:
1) Lack of SCCP supplementary services http://www.cisco.com/c/en/us/td/docs/ios/voice/fxs/configuration/guide/15_1/fxs_15_1_cg_book/fxssccpsplmft.html 2) Unable to use shared line appearances between the VG2XX and non-VG2XX device. Just two things to keep in mind. I've seen this sometimes act as a deal breaker w/ SIP to the FXS gateway. Hope this helps in some way. - Dan From: cisco-voip [mailto:cisco-voip-boun...@puck.nether.net] On Behalf Of norm.nichol...@kitchener.ca Sent: Tuesday, August 18, 2015 7:10 PM To: cisco-voip@puck.nether.net Subject: [cisco-voip] SIP analog gateways Anyone using a SIP FXS gateway instead of a VG224. Just trying to compare costs and ease of use. Thanks Norm Nicholson Telecom Analyst City of Kitchener (519) 741-2200 x 7000
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