This information is old and mostly plagiarized from others.
The AC-211-SR, also known as the Sunrocket 'Gizmo', is a 2-port FXS + LAN gateway device. It comes pre-configured for the Sunrocket VOIP service. After much investigation, we got ours working with Asterisk as an ATA (FXS) device.
Here are some reference URLs:
http://gizmopasswords.blogspot.com/
http://www.dslreports.com/forum/remark,17313021
http://www.homocoit.us/index.php?option=com_content&task=view&id=31&Itemid=1&pop=1&page=0
Reset the unit to defaults by plugging in an analog phone in port 1. Dial this sequence and wait for the unit to reset.
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If you have ADMIN access via a web browser, you can choose:
Reset → Default
Connect your computer to the LAN port on the AC-211 for programming.
Connect the WAN port to the network where your Asterisk server is located.
The ATA will communicate with Asterisk via the WAN port. We do not use the ATA as a LAN gateway (router) here, only as a ATA (analog telephone adapter) (also known as a 2-port FXS device).
During this configuration, you may find the unit automatically reprograms itself when you least expect it if it has access to the Internet via the WAN port! You may want to disconnect the WAN port to keep it from reprogramming itself while you work. Conversely, if you are having trouble accessing the web management pages, try giving it access to the Internet, then reboot it and try accessing it again.
The ADMIN password is “io$c6%2” or “18,” without the quotes.
The USER password is probably “welcome”, but you need the ADMIN password.
Try accessing with a web browser pointed to 192.168.7.1, 192.168.100.1 or 192.168.251.1.
Try setting your PC for DHCP and try to get an IP address assigned from the ATA. Then point your browser to 192.168.x.1 where x is the same as was assigned your PC by DHCP. If your PC fails to DHCP from the ATA, try manually setting your PC's IP address in turn to 192.168.x.10 where x is 7, 100 or 251.
After modifying the settings, be sure to save.
Once you've defaulted the programming per the reset procedure above and gained ADMIN access:
WAN → WAN Settings
Use the Reset menu item to reboot the unit when done.
This is very preliminary info but seems to work so far.
Sample sip.conf
:
type=friend username=5000 secret=5000 mailbox=5000 host=dynamic qualify=3000 context=internal callerid="Your_Name" <5000> canreinvite=no pickupgroup=1 callgroup=1 disallow=all allow=alaw allow=ulaw