FAX compatability with SLI, DTI and T1 trunks.

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FAX compatability with SLI, DTI and T1 trunks. #241193 07/12/09 08:03 AM
Joined: Apr 2007 Posts: 67 Montana Rural Hospital Member
Rural Hospital Member Joined: Apr 2007 Posts: 67 Montana	There appears to be a compatability problem with newer Brother FAX systems and DTI/T1 trunks. Here are the results of a little test to investigate difficulties with a new multifunction laser printer: MFC9840cdw July 11, 2009 FAX machine test to investigate dial-1 long-distance problem with Brother MFC9840cdw laser printer. System Hardware: IPK System SW: R4200. SLI(8)-U13 ETU, Lot 136D, FW=1.40 DTI-U20 ETU, Lot 196A, FW=2.00 Test: Test dial from each machine at least 10 times. Use long-distance number that requires first digit dial-1. Include a Pause after dial-9 trunk access. Use the same SLI(8) extension and DTI-U20 T1 trunk. Identify the dial "1" failure by "please dial 1" response from TelCo. Record touch-tone On/Off time on first dial "1" with buttset. Code Test Results: Machine: OK: Fail: On/Off time: Notes: Generic Handset 10 0 -NR- Radio-Shack telephone. Kyocera KM-2550 10 0 0.120/0.056 HP Laserjet 3030 13 0 0.077/0.071 Brother MFC7220 11 1 0.100/0.130 Brother MFC9840 4 6 0.098/0.135 Switch to CO trunk using dial-8 trunk group: Brother MFC9840 20 0 -NR- CO trunk also used for DSL. Conclusion: There appears to be a compatability problem between the IPK T1 trunk and the Brother FAX system. Does anyone know of any adjustments that might address this problem? Optimism is optionism.

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Re: FAX compatability with SLI, DTI and T1 trunks. #241194 07/12/09 09:07 AM
Joined: Apr 2007 Posts: 1,439 Denver, CO doghart Member
doghart Member Joined: Apr 2007 Posts: 1,439 Denver, CO	You could adjust the T1 trunk PAD for each trunk in prog's 3-29, 3-30, 3-31, 3-32. If that doesn't work I think your options at this point are to get a dedicated POTS line for the Brother fax machine, or get a different fax machine. D

Re: FAX compatability with SLI, DTI and T1 trunks. #241195 07/13/09 07:02 PM
Joined: May 2003 Posts: 2,924 mesquite tx brokeda Member
brokeda Member Joined: May 2003 Posts: 2,924 mesquite tx	What I have found on Panasonics, if the clock is off at the CO a little, everything works fine except slt faxes. Only other clue is that some wireless access points for the cordless phones cycle off and on randomly.

Re: FAX compatability with SLI, DTI and T1 trunks. #241196 07/15/09 11:53 AM
Joined: Apr 2007 Posts: 67 Montana Rural Hospital Member
Rural Hospital Member Joined: Apr 2007 Posts: 67 Montana	Problem solved! First dialed digit was getting dropped on the T1/E&M trunks due to premature trunk dial-tone from the IPK switch. Inserting a pause in the FAX machine dial string, before any digits are dialed, eliminated the problem. This also explains why the problem didn't appear on CO trunks. Question: what is the best approach to fix this? Have TelCo provide the dial-tone rather than IPK? Have all FAX machines insert pause before dialing? *Adjust the IPK to delay the T1 trunk dial-tone? (but how?) Thanks for your suggestions! -Dave Optimism is optionism.

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