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| Meridian Systems Welcome to the Nortel Meridian Forums Including Meridian Options 11-81C CS1000M Meridian Mail Call Pilot Companion and Sucession Hospitality OTM MAT MICB RAN NetGateway ..., and all other Applications |
| Tags: att, dtmf, pincode, problem |
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 12-24-2002, 04:22 PM | #1 (permalink) | ||||||||
| Junior Member
Rep Power: 0  | Here's one 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. | ||||||||
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| 12-26-2002, 09:04 AM | #3 (permalink) | ||||||||
| Junior Member
Rep Power: 0 | DISPLAY BASED ADD-ON CONTRAST? We did try thsi but this is how I tried it. Dialed the number hit # waited for the voice message to enter Account Code then input Account code. this failed. Should it be Dial number + Account code then# Thanks Alan | ||||||||
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| 12-26-2002, 09:16 AM | #4 (permalink) | ||||||||
| Senior Member 
Location: Chicago -- CENTER OF THE UNIVERSE Rep Power: 10 | DTMF AT&T Pincode Problem Wait -- There is a "voice" that requests the PIN after the number is dialed? Almost sounds like switch is gettin' or understanding answ. supervision from far end, but works with the analog phones, hmmm...... Tryin dial number wait for voice, hit # enter pin Are these circuits PRI? Jack __________________ Dogs rollover Phones hunt | ||||||||
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| 12-26-2002, 09:16 AM | #5 (permalink) |
| Junior Member | DTMF AT&T Pincode Problem If you can successfully enter the PIN code after pressing the # sign as Jack had suggested, you will need to adjust your end of dialing (EOD) timer in your route data block for the route that these calls are going out on. With digital telephones, the key pad does not become "hot" until one of two things occur, a.) answer supervison, or b.) EOD timer expires. Pressing the # tells the switch to drop EOD timing. There is one other way that I do not suggest, on the Trunks setting SUPV-NO, will make the digital sets key pads hot. When trunk routes are created, the EOD defaults to 13952ms (14sec.), you may want to adjust to something middle of the road around 7 seconds, if I remember right enter 6912. As far as tweaking paramaeters for DTMF output, I do not know of any way to do this. For the instance where I have used SUPV-No, it was a case where there was a private paging system within the customers network. The paging system never returned an answer supervison. What would result were no pages or blank pages or garbage pages. To remedy the situation, a few channels were carved out of the existing Tie routes at different locations and placed into new routes. The new route had the trunks set to SUPV-NO. This allowed for full-time hot keypads. The existing routes could not be set to SUPV-NO, because of other problems thtat were created which I do not recall. I thing there were issues with incoming calls, and also, forwarding over the trunks and trunk-trunk transfers. |
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| 12-26-2002, 09:48 AM | #6 (permalink) | ||||||||
| Junior Member
Rep Power: 0 | DTMF AT&T Pincode Problem This may help to understand the problem. We have an office out in Africa (Malabo) with an 11c with an T1 card connected to a Motorola router which then connects to a VSAT. The VSAT lands in Dallas (USA) then connects to a Motorola Router then a 11c in the Dallas Office. The AT&T trunk lines in Dallas that connect to the Dallas 11c require a pin code when dialing an internatioinal number through the AT&T lines, no pincode is required for local Dallas US calls. The AT&T system responds with a Voice Prompt saying Enter your Autorisation Code when dialing international, you then imput a 5 digit code. Without the Quintum D2400 in between the 11c and the Motorola in Malabo everything is working fine, But the pincode entry has always been a bit marginal but it works most of the time. When we put the Quintum D2400 in between the 11c and the router the pincode is not accepted by the AT&T system, but only a problem from the digital hand sets. It works no problem dialing to Dallas local numbers through the At&T trunks as this requires no pin code (Using Digital Hand Sets) It works no problem dialing international using Analouge Phones with a pincode using DTMF from the analouge keypad. It works no problem dialing international using the digital handset but instead of using the keypad to enter the pincode you use a DTMF toner on the mouth peice of the digital handset. We also dialed a voice mail system in Dallas that requires the use of DTMF input from a digital handset and that works. So there appears to be a siginal timing/level issue some where, Quintum whith who we have been working says that there unit just passes through the DTMF tones, but the inclusion of the box in the circuit may have introduced a slight attenuation or apmlification or delay in the signal. I am back in the UK for christmas but I will try everything sugested here on my return. Thanks Alan | ||||||||
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