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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 04/07/13 11:30, Rob Beard wrote: > Hi folks, > > I'm having a few issues with Asterisk and I wondered if someone > might be able to suggest any ideas how I might be able to solve > it? > > Basically we've got a machine running Asterisk with a Digium > analogue card with two FXO ports and two FXS ports. The phones we > use are Grandstream GXP1400/GXP1405 phones and one little > Grandstream DECT IP phone (can't remember the model number off the > top of my head). Maybe a DP715 > > The Asterisk box is connected to two BT lines which are located out > in the middle of nowhere (well, at least a couple of miles outside > of Totnes and what I suspect is a couple of bits of wet string). > Due to the location we get a fairly low broadband speed and > considering the other stuff we have going over the connection using > VoIP probably wouldn't work too well (at least VoIP calls between > sites as a test was hit and miss, sometimes worked, other times > didn't), so until BT bring FTTC to the area we're a bit stuck with > what we have. ISDN is a bit out of our budget too. SamKnows has a reference to 01/09/2013 for FttC on the Totnes exchange. > > So the issue we're having is when someone calls in to the site, or > someone calls out the volume of the caller at the office end in > Totnes is quiet. We can hear who we are calling, or whoever calls > in okay (we did have some echo issues but I think we've kind of > solved them). > > We're using Asterisk SVN-branch-1.8-r383667 built from source with > Dahdi 2.6.2 also built from source on Debian 6.0.7. > > I've tried adjusting the txgain in chan_dahdi.conf and it doesn't > seem to make much if any difference (I've also restarted dahdi and > Asterisk after making the changes). It's currently set at txgain = > 22.0 (I wasn't sure how high to put it to). You could try a Zycoo ZX20-A202. Which is an ARM based Asterisk box with two FXO ports built in. (Around £140). > > As a last resort we've tried an analogue phone and that does seem a > bit louder, so this makes me think there is something happening in > the phone system to cause it. At the moment the phone system is in > the office and connected via some CAT5 cable to the phone lines > which terminate in the next office (well one does, the other > terminates at another location and is on a long extension cable). How long an extension cable? Might be better to run CW1308, even CAT5, t a secondary socket. Keeping the flex to under 2m. > > So I'm stumped, does have any suggestions on how much I can try and > make lines a bit louder? > > Ta, > > Rob > > -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with undefined - http://www.enigmail.net/ iEYEARECAAYFAlHV2ZsACgkQsoRLMhsZpFfVcQCeLj/5PQquCO6K9j7iU4kGivFO oMIAnRSpRYCTMcShlOcuin9LskQ6Rok0 =9z3B -----END PGP SIGNATURE----- -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/listfaq