How to get a PSTN dialtone?

General Help
1

AsteriskNOW 2.0.2 / Asterisk 1.8.15
FreePBX 2.10.1.9

System is set up to require dialing 98 to make an outside call, e.g. 98-555-6789 or 98-1-234-555-6789.

FreePBX Outbound Route rules that support this are:

(prefix) 98 (match pattern) NXXXXXX
(prefix) 98 (match pattern) 1NXXNXXXXXX

I would like to be able to just dial 98, nothing else, and get a PSTN dial tone from which I can dial anything I want.

I tried an Outbound Route rule with just a prefix of 98 and no match pattern, and when I tried it I got “All circuits are busy”. (I can see that they are not.)

What is the correct dial rule pattern to get a PSTN dialtone in this manner?

I’m aware of the security implications and this is for special configuration purposes only, then it will get turned off.

Thanks…

Eric

2

What type of trunk are you trying to do this with? I have done this with DAHDI trunks using the rule you stated, prefix=98 and all other fields blank. I doubt it will work with non-analog trunks.

3

I’m using SIP trunks to Grandstream FXO gateways to the PSTN.

If what I tried can’t work, is there another way?

4

As Ned Flanders would say, “That’s a noodle scratcher.” The only thing that comes to mind is if the ATA has a built in feature to allow it. /shrug

edit
Perhaps you could experiment with the dialplan on the ATA and strip the prefix there instead of with the dial rules in FreePBX.

5

You can’t pull a dial tone from a SIP trunk because there is no dial tone on a sip trunk. It’s all data. The “dial tone” you hear isn’t coming from Asterisk, it’s being generated in the phone (or ATA).

BF

6

It’s SIP to the Grandstream FXO gateway and from there it’s regular analog PSTN. When the FXO gateway takes the line off-hook, presumably a dial tone is generated on the PSTN line. I’d just like to be able to hear that dial tone, which is just audio like any other audio (e.g. voice).

7

Is the grandstream set to 1 stage dialing or 2? If 1, then its waiting for a dial string before it goes offhook I believe. If 2, then you get a dialtone you can hear, and have to dial out across it. All depends on if you set it up as a true FXO trunk, or an extension bridge I guess.

8

It’s set for 1. I’ll try 2-stage and report back. Thanks…