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monitoring service as we can never be certain whether or not the device will eventually
"call home", however, it is possible to unlock them.
There are a small number of people that claim to be able to "remove" the firmware from
Customized ATA's and they usually charge a small fee for doing so (approx US$20).
Some VoIP service providers will provide you with unlocking instructions if they have
disabled the ability to do a factory reset from the IVR.
Some VoIP service providers prevent web access to the internal settings but will allow you
to factory reset the device from the IVR with 73738#.
Client Side Router (Notes)
The Linksys ATA is designed to operate from behind a single NAT router and there is
generally zero configuration required. It may be possible for the device to function
correctly behind two NAT routers but this type of setup is not supported.
The Linksys ATA uses the SIP protocol for the transport of data over the internet and this
can sometimes be affected by special features available on some routers (listed below). If
you experience a situation where alarm signals and heartbeats are received at the server
but your alarm panel does not receive a kiss-off, then it is possible that one of these
intrusive features has caused the rejection of responses from the server.
If your Linksys ATA adapter is connected to your router wirelessly, then it should be
understood that some wireless access points break up large packets into smaller packets.
It is the job of the wireless router to reassemble them again, however, this can sometimes
cause problems for the packets sent and received by the Linksys ATA and data loss can
occur. Increasing the packet size or port forwarding are known fixes for this issue.
Some routers have a feature named something similar to "Block Anonymous Internet
Requests". You will need to disable this feature if remote panel programming is to be
used.
To improve the quality of the audio stream (where used) between the Linksys ATA and
the monitoring server, it can be advantageous to make use of
your router where available. This will give higher priority to alarm traffic and reduce
network jitter at times when your Internet connection is under strain.
Things to try if you experience problems with a router:
1. Try using Port Forwarding
2. Try placing the Linksys device into the DMZ
3. Unblock Anonymous Internet Requests
4. Turn off SPI – Stateful Packet Inspection.
5. Turn off DPI – Deep Packet Inspection
6. Turn off SIP ALG
7. Turn on Gaming Mode
8. Turn off Strict UDP Session Control
QOS
(quality of service) on
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