Alan.Robertson@hess.com I have connected a Quintum D2400 unit between the 12c T1 and our Motorola Router, Our trunks in Dallas fom AT&T to dial an international
number require a Pin Code. With the quintum on line the digital handsets can't seem to pass the DTMF pincode to AT&T. Analouge phones
on the 12c have no problems as the test below shows. Also playing the pincode tones through the mouth piece of a digital handset works
as well, Are there any settings on the 12c to tweak the DTMF tones.
Test 1 (same calls as before), you place a call from your digital phone to an outside number (17324609000) and the Dallas system does not recognize the pin code dialed.
Test 2 - You place a call from a plain analog phone connected to an analog station port on your Malabo PBX to an outside number (17324609000). You enter the pin code from the analog phone and the pin code is accepted and call connects through.
What the above leads me to believe is that the DTMF tones being generated by the PBX when using a digital phone set is different than those from a analog set. I cannot say if they are faster, slower, louder or software, but it does seem that they are different. I believe that the tone amplitude or cadence (on/off time) may be at the edge of acceptable for the pin system when you call without Tenor, but with Tenor, depending on the amplitude, etc., it may just push it over so that the pin system does not understand the DTMF signals. I would expect this more so if the DTMF tones were too loud as the Tenor, because it is a digital system, really does not add any attenuation to this line, but it may "kick" the signal up ever so slightly.
When you use a digital phone set, and press one of the keys, you are not sending a "real" dtmf tone from the phone. Instead, the phone sends a digital command to the PBX to "play" a specific DTMF tone. The PBX then creates this tone and plays it out. When you dial from an analog phone set, the tone is played directly from the phone set, however, so it is "pure". I am hoping that there is some setting in the PBX to adjust this DTMF tone play-out.
Another test that wase done.
Also with tenor on line and using the DTMF tones from a analogue speaker phone to generate the 60111 pin code through the mouth piece of the handset this also works with no problem to an
international number through AT$T.
This leaves us with involving AT$T to see what is happening at there end when we are using the digital handsets in Malabo, I still think that if we can tweak the DTMF signal level from the PABX or router
then that may fix the problem.