Optimum Route Pattern Matching

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mruane

420 posts

Ultimate Geek
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Topic # 68188 16-Sep-2010 15:08

When configuring Outbound Routes for a Trixbox installation, will the use of a better constructed dial pattern result in faster outbound call handling by Trixbox?

For example, if I created a route consisting of say "021." (meaning any number beginning with 021 regardless of the number of digits dialled) be handled any differently than say 021XXXXXX and 021XXXXXXX - i.e. being specific about the number of characters expected to be dialled.

Would Trixbox make the connection faster because it does not have to determine that the user has finished dialling using a timeout i.e. the number dialled would be matched immediately to one of the rules in the route.

Cheers Mike

philelvey

104 posts

Master Geek

Reply # 380695 16-Sep-2010 15:21

Hi Mike,

That's a great question. In this context there are two links in the route from phone to PSTN: 1st (importantly) your PHONE's dialplan, and 2nd, the trixbox's dialplan (outbound routes).

The primary "hold up" from dialling a number to the call connecting is your phone's dialplan. What type of phone or ATA do you use? The dial plan can often be optimised here to speed up dialling

In my experience, changing trixbox's outbound route won't speed things up MUCH (it may very slightly)

My outbound route consists of:

00.
1XX
021.
022.
027.
028.
029.
08XXXX
0800.
0508.
NXXXXXX
0[3-9]NXXXXXX

Hope that helps

Phil

mruane

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Reply # 380722 16-Sep-2010 16:16

Hi Phil

Thanks for the feedback. I use both IP phones (Grandstream GXP2000) and Handytone ATA's 386 & 486 and I have not setup dialplans in either of the devices. My view was that the holdup delivering the call occured in Trixbox, but that may not be correct.

It seemed to me that Trixbox probably has to wait for the timeout value to expire before it assumes that it has all of the digits its going to get and then passes the call on after matching it to an outbound route.

I will experiment a bit and see what happens. I just wondered if anyone else had been down this path and could share their experiences.

Cheers Mike

philelvey

104 posts

Master Geek

Reply # 380735 16-Sep-2010 16:26

Ok, there's an option in the Grandstream's web GUI on how long to wait before sending the dialled number. 2-3 secs is usually good. You can also enable dialling straight away by following the number with the # key.

Cheers
Phil

mruane

420 posts

Ultimate Geek
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Reply # 380751 16-Sep-2010 16:56

Ok so that lets me confirm where the delay is originating. I will try using the # tonight on a dialled number and then change the outbound route and try to build up a picture of what is happening.

I guess in the end I am trying to make my free trixbox solution at home work like the expensive Cisco solution at work, where dialled numbers get connected almost immediately! Its worth a try...

Cheers Mike

sbiddle

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Biddle Corp

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Reply # 380818 16-Sep-2010 19:23

Outbound routes are only for routing calls via trunks. They won't make calls connect quicker.

To make calls connect quicker you need an appropiate dislplan in your phone / ATA to do all the pattern matching. If you are using a Linksys device my dialplan will pattern match every number range in NZ and connect calls instantly.

hads

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Reply # 380878 16-Sep-2010 21:05

And if you're using a Yealink or snom then I have one available.

nicegear.co.nz - VoIP, DVB and other Linux compatible hardware

mruane

420 posts

Ultimate Geek
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Reply # 381075 17-Sep-2010 09:38

Thanks guys, so you seem to be confirming that any delay in getting a connection established is more due to the phone time-out rather than a Trixbox time-out.

That points me in the right direction. One of the ATA's is a Linksys 3102 so perhaps I might borrow the dial plan data from the sBiddle blog.

Hads: thanks for the offer. The Yealinks look like a good buy at the moment also!!!

Cheers Mike