RE: [Asterisk-Users] RE: Noise on ZAP channel
[EMAIL PROTECTED] wrote: Probably not Geoff. It is still digital at that point I think. It should be coming to you as a four wire balanced circuit. It depends on which legacy PBX you are using (tho it is pretty standard) And if it wasn't right - it probably wouldn't work at all. Brett Thanks for the info, and sorry to the original poster for side-tracking the thread a little! Thanks, Geoff ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
RE: [Asterisk-Users] RE: Noise on ZAP channel
[EMAIL PROTECTED] wrote: Also - an outside chance - make sure Tip and Ring are correct. You could be getting ground loops - depends on the noise. I am having noise and slip errors between my TE110P and a legacy PBX T1 card. Could this be the same symptom? The connection is made using a 15 pin serial on the T1 Card side to RJ48 on the TE110P side. I can't determine what the pinout is on the serial side. Thanks, Geoff ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
RE: [Asterisk-Users] RE: Noise on ZAP channel
On 8/30/2005, Geoff Manning [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] wrote: Also - an outside chance - make sure Tip and Ring are correct. You could be getting ground loops - depends on the noise. I am having noise and slip errors between my TE110P and a legacy PBX T1 card. Could this be the same symptom? The connection is made using a 15 pin serial on the T1 Card side to RJ48 on the TE110P side. I can't determine what the pinout is on the serial side. Probably not Geoff. It is still digital at that point I think. It should be coming to you as a four wire balanced circuit. It depends on which legacy PBX you are using (tho it is pretty standard) And if it wasn't right - it probably wouldn't work at all. Brett ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[Asterisk-Users] RE: Noise on ZAP channel
I havea couple SIP phones on a PIII 1Ghz 256MB* server with a TDM01B connected to the PSTN. Calls between SIP phones are clear. Calls to the PSTN are quite noisy. The other person does not hear noise but I hear quite a bit. It is not an annoying sound but definitely much noisier than typical PSTN or even cell phone calls. I believe I have a TDM400P REV H card. I definitely don't have any IRQ issues. Everything not required is disabled in BIOS. Zaptel drivers have been compiled with defaults and with MMX and other enhancements. Have tried V1.0.9.1 and current 1.2 beta1 software. Nothing changes. Tried telco PSTN connection and VoIP provider connection via ATA which both sound clear when connected directly to an analog phone.Nothing changes. Tried adjusting RX/TX gain and echo cancellation in zaptel.conf. Nothing changes. Doesany one have any ideas? Could my FXO module be bad? ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[Asterisk-Users] RE: Noise on ZAP channel
On 8/29/2005, canuck15 [EMAIL PROTECTED] wrote: I have a couple SIP phones on a PIII 1Ghz 256MB * server with a TDM01B connected to the PSTN. Calls between SIP phones are clear. Calls to the PSTN are quite noisy. The other person does not hear noise but I hear quite a bit. It is not an annoying sound but definitely much noisier than typical PSTN or even cell phone calls. I believe I have a TDM400P REV H card. I definitely don't have any IRQ issues. Everything not required is disabled in BIOS. Zaptel drivers have been compiled with defaults and with MMX and other enhancements. Have tried V 1.0.9.1 and current 1.2 beta1 software. Nothing changes. Tried telco PSTN connection and VoIP provider connection via ATA which both sound clear when connected directly to an analog phone. Nothing changes. Tried adjusting RX/TX gain and echo cancellation in zaptel.conf. Nothing changes. Does any one have any ideas? Could my FXO module be bad? Sure - it could be - I would check it in another TDM400 slot on the card to make sure. Also - an outside chance - make sure Tip and Ring are correct. You could be getting ground loops - depends on the noise. Brett ___ --Bandwidth and Colocation sponsored by Easynews.com -- Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[Asterisk-Users] Re: Noise on ZAP channel
In article [EMAIL PROTECTED], Matt [EMAIL PROTECTED] wrote: Chris, Thanks, that's better, but there is still a faint buzzing in the background. [X100P on BT line] The X100P is poorly impedance-matched to UK phone lines, so will never work very well. The impedance matching is fixed in the hardware, so can't be configured by the software. The FXO modules for the TDM400P (e.g. TDM01B) have software-configurable impedance setting and I believe the zaptel code includes the settings for UK lines. So they should work much better, but I haven't tried one. Unfortunately, Telappliant don't seem to stock those yet, so you would have to order from the US. Cheers Tony -- Tony Mountifield Work: [EMAIL PROTECTED] - http://www.softins.co.uk Play: [EMAIL PROTECTED] - http://tony.mountifield.org ___ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
