Thanks for the clarification of ANI/ANAC vs milliwatt numbers. I used the play-tones method because Asterisk probably does not generate the proper tone with Milliwatt() due to a bug. Some good reference here:
http://www.mattgwatson.ca/2008/05/howto-tune-zaptel-dahdi-fxo-interfaces-on-asterisk-pbx/ So, > From: [email protected] > To: [email protected] > Date: Fri, 9 Jul 2010 08:38:41 -0400 > Subject: Re: [on-asterisk] Rx and Tx gain Tuning --- Am I right with my method > > On Friday, July 09, 2010 01:09:59 am Bruce N wrote: > > I can't find a Type 102 Milliwatt for Toronto area to test with but I think > > my PRI should be a perfect test system???!!! The milliwatts provided by > > Bell talk your number back to you instead of a contineous tone so they > > can't be used for this purpose. > > The number that tells you what number you're calling from are ANI or ANAC > circuits, not milliwatt numbers. Milliwatt numbers are generally loud, > obnoxious continuous tones that continue for several minutes, and then > usually > break into a series of milliwatt-level bursts. Quiet termination numbers are > just silent. > > Your testing method is close. Dial into a DID on your PRI and have the PRI > send Milliwatt(); there is no need to generate it with PlayTones. Adjust the > RX gain on your analog line until you get the magic value of 14844. > > Now the analog RX side is adjusted. Have the digital side call the analog > line > and have the analog line run Milliwatt(); adjust the analog side's txgain > until the digital side reads the same value. > > I've heard some speculation that setting your txgain this way can result in > your transmitted audio being too "hot" -- I've done some relevant searching > of > the archives but haven't found this reference now, and it's been a good many > years since I've had to play with this myself. > > Give it a go; if you have trouble with people saying you're too loud you can > adjust the txgain down some. This is, however, the way I used to do it and > didn't have any troubles. > > -A. > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > _________________________________________________________________
