advice on Sipura 2100 dial plan needed

[tatjam]

I've recently been experimenting with dial plans on my Sipura 2100 and wanted to ask whether the strings I've come up with might be improved at all. I'm not so great with this kind of logic, so I assume they could use some improvement and/or simplification. I should point out that what I've got does seem to work fine, only I suspect there may be better ways of doing it. I'm in the US, by the way, which will become apparent as I progress.

Please note that this post refers to dial plans entered into the Sipura itself, and not to dial plans entered into my voxalot account. For the time being I'm sort of forced to do all this on the Sipura since, unless I directly connect to my voice provider (justvoip), I end up getting FUP exceeded charges.

So, here's what I've got:

(18[06-8][06-8]xxxxxxxS0|<:00>1[2-9]xx[2-9]xxxxxxS0|<911:0014141234567>|<:001414>[2-9]xxxxxxS0|00xx.<:@sip.justvoip.com;usr=my-usr;pwd=my-pwd>|[x*][x*].)

Explanation: all outgoing calls to the PSTN go through justvoip and, in accord with their stipulations, must be preceded by 00 (plus country code plus area code plus number). The first rule I created for toll free calls, which should go through voxalot, not through my VP. The second rule allows me to dial 1 plus 10-digit (area code and number) calls like on a PSTN line (it prepends 00 to the 1). The next rule allows me to reach the local non-emergency police dispatcher by dialing 911 (as close as I could come so far to anything like a real 911 service). The next rule prepends 001414 (my local area code plus justvoip's 001 prefix) to any 7-digit number dialed from my phone--in effect allowing me to make local calls in the same fashion as they're made from a PSTN phone. The next rule sends all calls with 001 prepended to them to my voice provider using their URI. The final rule is just the only rule I used to have in the Sipura. I have yet to experiment with removing and/or modifying it and would appreciate advice on it in particular.

Like I said, what I've got is mostly effective. There are cases, though, when I see a fairly lengthy delay before my call is terminated--I presume that's because the Sipura's built-in timer has kicked in and needs to time out (I think timers are set to 3 or 10 seconds depending on the case) before actually sending the call. It seems to me that improvements in my rules should therefore focus generally on minimizing or eliminating the delays.

So, any input on how my dialing rules might be improved? How about that last entry: do I really need that? I have yet to formulate a rule specifically for calling other voxalot users but I think that, were I to get rid of that final rule, it should probably be replaced by one designed to send calls to other voxalot users (like maybe xxxxxxS1?)

Help will be appreciated.

Thanks,
James