Francois Romieu has “cut some non-compiling functionality”. That’s why the particular line’s clock rate is set using the generic sethdlc util. One notable exception is the “Etinc PCIsync” driver dscc4. This option is only available if sethdlc and the soundcard modem kernel driver is compiled with debugging support on. In other words, some parts are missing from this modified sethdlc.
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With multiple simultaneous TCP transfers, the efficiency seemed even better. Without the -p, -a and -c option, sethdlc will stay in the foreground and display received packets. Both devices run along hdllc same clock signal and have a chance to properly align the clock and data signal edges for proper latching.
Another possible point of view is that we don’t really need X. Unfortunately, this hardware-specific link state information in the various sync serial drivers is not accessible from user space in any consistent way, and perhaps not accessible at all. Under the hood – references to kernel guts. This option is only available if sethdlc and the soundcard modem kernel driver is compiled with debugging support on.
I have installed all this on a system running RedHat 9, thus replacing its stock 2. More on this in the chapter on PPP below. To help achieve this, there linuxx two utilities: Is there really no solution for adding a small waiting time 2ms between each HDLC frame? This is needed by some implementations of alternative channel access algorithms, hdlf.
It can talk to a modem and can dial out to call the dial-in party, or can be set for null-modem connections using the “local” keyword. Note that some modems do not actually support full duplex mode, in this case this parameter makes the modem start its transmission as soon as it gets packets from the upper layer, without waiting for the channel to become free. In the worst case, would it be “easily” possible to alter the sources and introduce a small sleep after every HDLC frame?
Generic PPP for Generic HDLC [1/3]
Originally I was planning to cut’n’paste their information here, their copyright policy would surely permit me to do that – but then again, why dilute hhdlc excellent original. The mode portion may be afsk or fsk The slottime parameter specifies how often the channel access algorithm is executed. You need link status detection and flexible routing with floating static routes and redundant WAN connectivity.
If you have some success stories with the older versions of all the software, feel free to send me precise descriptions of how limux arrived at your operational setup – I’ll include your instructions here. Unlike kissparmsthe unit is tens of ms.
gdlc Please visit this page to clear all LQ-related cookies. The mode parameter sets the type of hardware and the operating mode of the driver. Are you new to LinuxQuestions.
ppp over MHz transceiver, HDLC frame timing
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration.
So much for link status detection and reporting. I didn’t find any option for that. If an interface is “down”, it simply vanishes from an ifconfig listing – you have to add the “-a” option to see all the interfaces, including those that are administratively down.
CONFIG_HDLC: Generic HDLC layer
The “WAN router drivers” foldable subsection should really be called “Sangoma hardware drivers” and pretty much belongs into this category. In other words, these six-or-so entries hide almost completely separate HDLC stacks – except that many of them use syncppp. This is the time the transmitter needs to switch its PA on and for its frequency synthesizer to settle. Back to my equipment: The menuconfig help doesn’t provide much information, the contents of Config.
The PEB parses the RX bitstream in hardware and the driver works with data already broken down into frames. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.