These route patterns eliminate having to wait for any "timeouts" before placing the call, except for int'l calls. As you can see, there is no way to dial "911" without a 9 before it. Too many users "stutter punch" 911, when they mean to dial 9, 1 then area code.
I've used these dial route patterns for well over a year now with no issues. I personally find these easier to manage than using route filters.
I also have the same problem. The call goes out through the VG200 and the VG200 mask the caller ID, so in my route list I choose for the call to go out my PRI/AGM first. By doing this the caller ID goes out with the call and 911 can call the person back. We like having the 911 and 9.911 because you can't anticipate what a panicky user might dial.
Set up a route filter (named EMERGENCY) that says SERVICE == 911. Create a Route Pattern with these options: Route Pattern: 9.911, Partition , NANP, Route Filter -- EMERGENCY, Gateway , discard digits PREDOT (I use .T as my destination pattern for out bound calls).
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