asterisk users - Jan 2010 - AudioCodes MP-114 - SAS (Stand Alone Survivability) configuration

I have AudioCodes MP-114 and I'm trying to configure SAS (Stand Alone
Survivability); when Asterisk is down the MediaPack gateway should forward the
call
IN/OUT through the gateway (without asterisk in the middle), but it is not
working.

I'm working with tech. support from the source I purchase the unit from they
we are just emailing back and forth and the unit is still not working.
Can anybody share settings how to configure "Stand Alone
Survivability" mode in AudioCodes MP-1xx ?

-- 
Joseph

SOLVED! 
Correct me anybody if I'm wrong but I think SAS option is for WAN only not
for the case if AudioCodes MP and Asterisk are on the same network.

I was trying to configure the fail-over mode in scenarios:
- Asterisk sever goes down (doesn't happen very often, never happened to me
but it could)
- hardware failure 
- power loss etc.

(It seems to me Audiocodes caters MS and/or close source hardware; they have
many "doc" files on their web-page but very little or none pertaining
to Asterisk configuration with their hardware MediaPack), so here is my solution
without going through 500-pages manual.
  
So in the above cases the calls should go through IN or OUT without
interuptions, Audiocodes MP can be configured for fail-over mode; my old Liksys
3102 CAN
NOT, when power goes down and Linksys is up, the calls will not go through. 

Here is the relevant configuration for the above scenario:


=================Protocol Configuration -> Proxies/IpGroups/Registration
-> Proxy & Registration ->
Use Default Proxy: NO
Enable Fallback to Routing Table: Enable
Prefer Routing Table: NO
Enable Registration: Enable
Registrar IP Address: 10.0.0.109  (enter IP address of the asterisk server, very
important)
Gateway Name: (none)
Gateway Registration Name: (none)
Subscription Mode: Per Endpoint
User Name: (none)
Password: Default_Passwd
Cnonce: Default_Cnonce
Authentication Mode: Per Endpoint

Routing Tables -> Routing General Parameters ->
Alt Routing Tel to IP Connectivity Method: SIP OPTION ; (in case asterisk and
MP-114 are on the same network)

Tel to IP Routing ->  (your numbers and IP's will be different)
Src. Trunk Group ID  Dest. Phone Prefix  Source Phone Prefix  Dest. IP Address
*                    369                  *                    10.0.0.157
*                    *                    *                    10.0.0.109
*                    *                    *                    10.0.0.157

First line is for fax extension, there is no reason to forward it to asterisk,
it should go directly to Hylafax (or your fax machine) regardless of
asterisk status.
Without playing/entering all internal extensions, second line directs all calls
to Asterisk sever.
Third line is for fail-over mode in case of Asterisk failure, power failure, all
calls are directed via to MP-114 so calls go IN and OUT without interruption

In addition to these setting user must configure:

Routing Tables -> IP to Trunk Group Routing 
Endpoint Settings -> Authentication
Endpoint Settings -> Automatic Dialing
Endpoint Number -> EndPoint Phone Number
Hunt Group -> Hunt Group Settings

and Optionally: 
Manipulation Tables -> Dest Number IP->Tel
==================
-- 
Joseph