Currently have a Prodigy system installed with idoc and 4 zones using Mobile Pro G as a second controller. When I use the iPad in the weekend chalet on my own it's flawless but as soon as they arrive with up to 7 wifi devices (iPhones, laptops, iPads) the iPad drops out once in a while and sometimes needs restarting to reconnect.

I'm thinking the culprit is the Sony/Erigsson W35 3G modem/router - the lone router which connects everything including the dock and PMC2+. It's supposed to be able to handle 15 devices and the most they've ever had is 9. Default security setting are being used.

[Link: bell.ca].

They also have a cordless phone but not sure what frequency it is.

Anyone have an idea what the problem may be? Should I use a different router?

When you say default security do you mean none or WEP or something else? I had this problem with a client who used WEP encryption and changed the encryption and the problem was eliminated.

Yes the default wireless security is turned on but I don't know what type. Also the PMC2 is set to a fixed IP outside of the DHCP range. What are the chances another laptop is set to this address?

Theoretically, it could be an issue with IP out of range but the first thing I would do is check the encryption and change it if it is WEP. I have had more problems with WEP and newer deviices either dropping the connection or not connecting at all...

Would that explain why it disconnects when more devices are around? When I'm by myself I never experience connection problems.

not really if you are connected ok before the others. most likely in that case one of the newer connections wouldn't get on since all of the addresses are used up. it should be the last guy just not connecting in that case not an existing connected person dropping out. unless this overloads the router or something.

unless the router uses some crazy first in first out methodology for assigning dhcp addresses and kicks out the oldest address (your ipad) when the scope is used up in order to free an ip for the new device that is making it go past it's scope. i doubt this is the case but who knows.

you could try checking the router logs if it has any. maybe the router is rebooting for some reason and throwing everything off when it does. maybe everyone drops for a minute but you don't get back on at all and the others don't notice because it's only for a minute.

double check your settings on your ipad in the wifi section. click on the ssid and see if there are any special settings used in there like a proxy or something. if so take it off. you could also try just deleting your ssid connection on the ipad and adding it back in just for kicks.

on the router you could try deleting all of the dhcp leases and start over to see if that helps.

try increasing the dhcp scope on the router also as was mentioned previously.

finally check your range when you drop vs. everybody who is ok. if you are farther away from the router then the others maybe you are too far away for that router. have someone who works with another device (preferably another ipad) switch places with you and see if they drop over time like you did. maybe you have some dead zones or range issues that you are dropping. if that is the case put in a repeater wifi router to extend the range.

I don't think there is a simple answer to this question as there are so many possible culprits. However a few suggestions:
1.If you are not using enterprise or business class networking with a Crestron WiFi solution you are looking for problems--and you may have found them here.

2. Look at your DHCP range but I'd be very surprised if this is where your problem lies--but you should check just to be sure.

3.Crestron WiFi works by sending out a heart beat and many consumer grade equipment cannot handle the rate of communications the Crestron WiFi device ( and mobile G/Pro G are Crestron WiFi devices ).

4. Does the iPad connect to the Internet using other applications? Can you access the App store? Can Web browser launch and connect? Is the issue limited to the Mobile Pro G app or is it

5. I'm good at networking but not an expert. Other than the basic advice above you'll have to find a way to log communication data between mobile Pro G and the processor.

6. Are any other Crestron networking applications working. Can you ping the Prodigy processor? Can you operate the idoc?

7.Open Toolbox, go to Console, and type "EST". Do any devices report online? Are all offline. You can issue ping command from Console. If you ping the iPad does it respond?

Alan