Portech MV-370, User Manual

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These settings seem to be ok, just adjust ...
21.3 Antenna position
Another important thing is to properly place the provided antenna.
If your gsm reception is good, you should get around 18 or 19 as Signal
Quality in the "Mobile Status" page.
With that level of signal quality, your audio quality will be very good.
On the other end,the signal quality down to 11, audio becomes very
jerky.
So, maximum signal quality = maximum audio quality.
21.4 Asterisk configuration
Once the MV-370 is set, you have to configure Asterisk.
On that side, you have to setup files as follow :
21.5 sip.conf
; GSM VOIP Gateway MV-370
[103]
type=friend
username=103
fromuser=103
regexten=103 ; When they register, create extension 401
secret=xxxxxxx ; Asterisk extension password
context=gateway ; Incoming calls context
dtmfmode=inband ; Very important for DISA to work
call-limit=1 ; Limit to 1 call max
callerid=GSM Gateway <103>
host=dynamic
nat=no ; Gateway is not behind a NAT router
canreinvite=no ; Typically set to NO if behind NAT
insecure=very
qualify=yes
disallow=all
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