I have published a new wanpipe 3.5.27 which adds support for the Sangoma GSM cards.
Please see the following threads on how to upgrade for each version
1.8xx.210.5x- Stable FreePBX 2.10 with Asterisk 1.8 and Centso 5.x http://www.freepbx.org/forum/freepbx-distro/distro-discussion-help/asterisk-1-8-stable-release-versions-for-distro
1.10xx.210.5x- Stable FreePBX 2.10 with Asterisk 10 and Centso 5.x http://www.freepbx.org/forum/freepbx-distro/distro-discussion-help/asterisk-10-stable-release-versions-for-distro
1.10xx.210.6x- Beta FreePBX 2.10 with Asterisk 10 and Centso 6.x http://www.freepbx.org/forum/freepbx-distro/distro-discussion-help/asterisk-10-beta-release-versions-for-distro