<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Verdana; font-size: 10pt; color: #000000'>I think people are really wanting the DSP that can do >14.4 speeds.<br><br>PBX's analog lines have had this for ever. Even hitting speeds of 100kbps if not higher.<br><br>ROLM had it's advantages.<br><br>---<br>Lelio Fulgenzi, B.A.<br>Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1<br>(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)<br>^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^<br>"Bad grammar makes me [sic]" - Tshirt<br><br><br>----- Original Message -----<br>From: "Nick Matthews" <matthnick@gmail.com><br>To: "Lelio Fulgenzi" <lelio@uoguelph.ca><br>Cc: "STEVEN CASPER" <SCASPER@mtb.com>, cisco-voip@puck.nether.net<br>Sent: Tuesday, May 19, 2009 5:29:06 PM GMT -05:00 US/Canada Eastern<br>Subject: Re: [cisco-voip] Fax Machines having a very delayed response<br><br>Technically the SG3-G3 feature for MGCP T38 is supposed to do this for<br>you, to prevent having to program fax machines. It blocks the SG3<br>tones and waits until the fax machines renegotiates G3. This can have<br>its own issues though.<br><br>It's worth noting that the DSPs do not guarantee any speed faster than<br>14400 for modem passthrough, but if you are going to try and get<br>faster speeds it's the only way and it can be done under some<br>circumstances.<br><br>You won't do SG3 relay, but you may be able to get SG3 to work through<br>modem passthrough basically.<br><br><br>-nick<br><br>On Tue, May 19, 2009 at 2:24 PM, Lelio Fulgenzi <lelio@uoguelph.ca> wrote:<br>> Correct. Got to turn off SG3 (33.3 to 14.4 and turn off error correction).<br>><br>><br>><br>> ---<br>> Lelio Fulgenzi, B.A.<br>> Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1<br>> (519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)<br>> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^<br>> "Bad grammar makes me [sic]" - Tshirt<br>><br>><br>> ----- Original Message -----<br>> From: "STEVEN CASPER" <SCASPER@mtb.com><br>> To: "Nick Matthews" <matthnick@gmail.com><br>> Cc: cisco-voip@puck.nether.net<br>> Sent: Tuesday, May 19, 2009 2:09:04 PM GMT -05:00 US/Canada Eastern<br>> Subject: Re: [cisco-voip] Fax Machines having a very delayed response<br>><br>> You still can not use SG3 through a gateway though, right?<br>><br>> By the way thanks for your various fax posts, they have been very useful<br>><br>> Steve<br>><br>> Please consider the impact on our environment before printing this e-mail.<br>><br>>>>> Nick Matthews <matthnick@gmail.com> 5/18/2009 8:46 PM >>><br>> It's possible that the SG3 to G3 conversion that is on by default in<br>> 12.4(20)T and later is blocking the high speed fax tones in the<br>> beginning and it takes a while for the low speed to come through.<br>><br>> To play devil's advocate on the MGCP vs SCCP debate, MGCP is actually<br>> more feature rich when it comes to fax machines. And since your fax<br>> machines aren't going to be doing hold/resume and group pickup, it's<br>> rather irrelevant. Possibly more administrative overhead, but MGCP is<br>> probably a better fit for fax machines, although H323 is probably even<br>> better.<br>><br>> To disable the SG3 conversion:<br>> no mgcp fax-relay sg3-to-g3<br>> no mgcp fax-relay ans-disable<br>><br>> Worth a shot anyways.<br>><br>> There were a some MGCP T38 bugs in 12.4(15)T8 and 12.4(22)T1 you may<br>> want to watch out for also.<br>><br>><br>> -nick<br>><br>> On Mon, May 18, 2009 at 8:38 PM, Erick Bergquist <erickbee@gmail.com> wrote:<br>>> What do you mean by "delayed" response?<br>>><br>>> Do you have the FAX machine Error Correction Mode turned off, and<br>>> reduced the FAX machine speed to 14400 or 9600?<br>>><br>>> Are both gateways (VG224 where FAX machine is) and the PSTN gateway<br>>> set for same FAX method (passthrough or relay).<br>>><br>>> Is the PSTN Gateway that the calls leave on also MGCP?<br>>> Can you FAX internally between 2 FAX machiines on the VG224 fine?<br>>> _______________________________________________<br>>> cisco-voip mailing list<br>>> cisco-voip@puck.nether.net<br>>> https://puck.nether.net/mailman/listinfo/cisco-voip<br>>><br>> _______________________________________________<br>> cisco-voip mailing list<br>> cisco-voip@puck.nether.net<br>> https://puck.nether.net/mailman/listinfo/cisco-voip<br>><br>> ************************************<br>> This email may contain privileged and/or confidential information that is<br>> intended solely for the use of the addressee. 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