Re: [Sonic #7202848] unable to enter landline phone keypad touchtones after connecting on call

[http://dummy.us.eu.org/robert (Robert )]

Thanks.

George, from Sonic support, actually replaced the modem.  Everything
worked perfectly as soon as he installed it.  He told me that the modem,
being new, was going to upgrade itself and he offered to do the firmware
upgrade immediately.  I took him up on the offer.  However, after the
firmware upgrade finished, the problem came back.

We used his phone and it failed in the same way as my phones.  So,
my phones are not at fault.

In addition to George, George's colleague looked at it, and both of them
saw what I saw: the problem with DTMF/touchtones has nothing to do with
my phones.  It seems to be a problem between the Adtran fiber modem and
the downstream VOIP/SIP servers, probably related to the firmware in
modem.

I believe that George will submit his report so that we can continue to
try to get this problem solved.

 > From: http://www.sontec.sontrak.net/~support
 > Date: Tue, 27 Jun 2023 16:10:39 -0700
 >
 > Hi,
 > 
 > Here is a link to schedule your dispatch:  
 > https://members.sonic.net/dispatch/appointment?id=606263&_=8859da118efc4651f61b740d22f5c7f87d87526c2caf9ff68f70a31bf0fb5b72