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Hi, My set up is : Asterisk with B410P in NT mode <-------------cat5 straight cable ----------------> Another PBX in TE mode Is the 100 Ohm terminator you can find on B410P boards, necessary when connecting in NT mode to another PBX (set in TE mode) ? Cheers -------------- next part -------------- An HTML attachment was scrubbed... URL:

...eg, 600 ohm > impedence)? This is a question I've been trying to answer too. I had a look at the standard phone that Telstra would provide to customers about 5 years ago, and it has an impedence switch on the bottom to toggle between 'NORM' and '600', which suggests that 600 ohms isn't the normal impedence. On an au configuration example for the pap2 I have seen on the web, the impedence is set to '220+820||120nF', which suggests that our standard here isn't 600. > > Does anyone know of an addon device which > > can do impedence matching on th...

...t is also well configured because when I interchange the cables (with the exiting cable from the other telco), the alarm clears emmediately for the 1st telco and becomes RED for the 2nd telco. A loop also clears the alarm on both ports. The telco has told me to make sure that Line Impedance is 120 ohms but There's no where to set that and when I was reading, I was told that E1 is already 120 ohms so no need to change anything. Has anyone here experienced this? What other things can I try? Thank you! Regards, Tim -------------- next part -------------- An HTML attachment was scrubbed... UR...

...Digium card (TDM2400), it works ok. The same with my Brazilian DigiVoice FXO card. Ok, you all might say: your card is damaged, throw it away. Ok, I could do it, but now comes the funny part: If I put an DSL filter in series with the line and the card, IT WORKS PERFECTLY!!! The filter imposes 25 ohms over the circuit. Maybe that's causing the card to work. When I put the filter and the ammeter in series, I get zero amper when on-hook and 26 mA when off-hook, that's the expected behaviour. I'm not an expert in electricity, so I really don't know why the card is behaving that way...

...? how would i pass the opermode=AUSTRALIA parameter to the wcfxs.ko module as kldload doesnt let you pass parameters to the module like modprobe in Linux. I tried to get the sysctl variable using sysctl -a it might use but nothing applicable was visible.... i need to set the impedences to 600 ohms, can someone please advice me on how to pass the parameters to the module? regards Kavit

...have the 3rd and 4th axes in there as well, all meeting in their respective corners. par(mfrow=c(1,2)) gut<-c("Full", "Empty", "Full", "Empty") par(family="serif", cex=1.2, lab=c(length(gut),4,4)) boxplot(Xc~Trt,data=error,ylab="Reactance (Ohms)",xlab="Stomach Fullness", ylab="Reactance (Ohms)", axes=FALSE,ylim=c(50,200)) axis(side=1, at=c(1,2,3,4), labels=gut) axis(side=2) text(1.5,115, "Mid BIA") text(3.5,160, "Whole BIA") points(1,135, pch=2) points(2,135, pch=2) points(3,135, pch=17) points...

...terchange the cables >>(with the exiting cable from the other telco), the alarm clears >>emmediately for the 1st telco and becomes RED for the 2nd telco. A >>loop also clears the alarm on both ports. >> >>The telco has told me to make sure that Line Impedance is 120 ohms but >>There's no where to set that and when I was reading, I was told that >>E1 is already 120 ohms so no need to change anything. >> >>Has anyone here experienced this? What other things can I try? >> >>Thank you! >> >>Regards, >>Tim &gt...

I have an x100p which suffers from echo (no surprise there apparantly :), and a few of the things I've read about tuning out echo say the first thing to get right is the tx and rx gain, and for that you need a few different types of test lines from the telco (Telstra, Optus, whatever). Does anyone have any numbers in Australia for such lines? I think they just need to send out a tone of a

We are located in Belgium and just ordered a PRA line, the telco asked the following questions : - 120 or 75 ohm ? - Support for CRC4 yes/no ? - B channels in 2 way ? We will buy a digium card but which one should we buy ? could anybody help me with this ? Thank you Michael Sorry for the previous html mail DISCLAIMER: The content of this e-mail message does not constitute a commitment

Hi, I've started my own (first) package, part of which consists in listing common physical constants (Planck's constant, the speed of light in vacuum, etc). I'm wondering what would be a good way of dealing with pairs of value/unit. > constants <- list( cel = 2.99792458e8 , #m/s > Z0 = 376.730313461, #ohm > eps0 = 8.854187817e-12,#F/m > mu0 = 4*pi*1e-7,#N/A^2

I am still having unacceptable echo on my X101P and twidling with the rx/tx gain levels and echo settings appears to have no discernable effect. Some questions for those who may have more significant electrical engineering background than I. 1. This impedance match thing ... will it affect this solution having other phones in parallel with the X101P? This is done so that I can test while not

...erchange the cables (with the >> exiting cable from the other telco), the alarm clears emmediately for the >> 1st telco and becomes RED for the 2nd telco. A loop also clears the alarm >> on both ports. >> >> The telco has told me to make sure that Line Impedance is 120 ohms but >> There's no where to set that and when I was reading, I was told that E1 is >> already 120 ohms so no need to change anything. >> >> Has anyone here experienced this? What other things can I try? >> >> Thank you! >> >> Regards, >> Tim...

-----Original Message----- From: asterisk-users-bounces@lists.digium.com [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of Zoltan Szecsei Sent: zaterdag 16 juli 2005 12:54 To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [Asterisk-Users] Multiple ISDN BRI Units with Asterisk usingBristuff zaphfc in NT mode? >> Maybe this is rather a hardware question,

Hi All, This is our 2nd E1 client that we try to use crc4 either with the e100p or with the e405p without luck. After some trials, we ask the telco to switch off crc4 on their side and everything works flawlessly. Is there anything in the crc4 calculation that may be broken? We took a look at wct1xxx.c and wct4xx.c but there doesn't seem to be much there to be fixed (apparently the crc4

...erchange the cables (with the >> exiting cable from the other telco), the alarm clears emmediately for the >> 1st telco and becomes RED for the 2nd telco. A loop also clears the alarm >> on both ports. >> >> The telco has told me to make sure that Line Impedance is 120 ohms but >> There's no where to set that and when I was reading, I was told that E1 is >> already 120 ohms so no need to change anything. >> >> Has anyone here experienced this? What other things can I try? >> >> Thank you! >> >> Regards, >> Tim...

Hi everyone, Could somebody explain to me what is the package/function for classification analysis. I am performing analysis of music files in the form of MIDI files. I end up with about 750 dependent variables from the analysis, I also have a number of independent/grouping variables that I set manually. What I would like is to be able to predict which group a particular MIDI files belongs to

Hello, Is it possible, for testing, to connect an cat5 straight patch cord between 2 ports of a Digium B410P card and use these 2 ports as a normal dahdi trunk ? I've tried this: One port is set as NT, the other as TE. I would expect timing to come for system hardware so I choose in /etc/dahdi/system.conf : span=1,0,0,ccs,ami span=2,0,0,ccs,ami Results: - both ports lights are green -

Hello, Can you please tell me what the overload point is for OPUS in dBm0 or dBV? As an example, the G.711 A law codec has an overload point of +3.14 dBm0 across a 600 ohm circuit. In ITU-T G.100.1 section 5.8 you can read more about the relationship between dBm0 and dBov. In that same section you can see that the G.711 A law, u law, and G.722 codec overload points are also defined.

I am finding that I have to increase the txgain in zapata.conf to 8 when my X101P is connected to my BT phone line, otherwise people can hardly hear me. This then gives echo issues. Do other people have the same problem on BT lines. I was wondering if I should give BT a call and get them to increase the gain on the line. Strange though as the rxgain is OK and I don't have this problem with

You can lower the float charge voltage that APC Smart UPS units such as SU1000NET or SU700NET supply to the battery. This is important when substituting Lead Acid Deep Cycle batteries for the usual sealed maintenance free batteries provided. Here are the instructions: 1) Only do this if you are fully trained and qualified to work on Lead Acid powered UPS. These units contain lethal voltages