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www.zhixun-wireless.top<http://www.zhixun-wireless.top/> provide SDR PA LNA duplexer Best Regards ________________________________ From: Neels Hofmeyr <[email protected]> Sent: Wednesday, April 3, 2024 8:37 To: JPichel <[email protected]> Cc: [email protected] <[email protected]> Subject: Re: Channel Requests not being responded when running CS-only 2G network On Fri, Mar 29, 2024 at 11:09:24PM -0000, JPichel wrote: > This are some examples of the problems I am experiencing, and they all seem > to involve one of the radio not responding to some messages. Also I noticed > this mainly happens the more I wait without making any connection between a > terminal and the network, so if I connect the terminal to the network, then > wait 10 minutes, and try to execute an USSD code, it is more likely than > there is a error establishing the connection. This sounds like the time I was using a B210 without a solid external clock. Randomness to the point of sometimes seeming reliable. Funny part is, it didn't get better when I connected a GPS antenna. Then learned that the B210 had only the external connector without a GPS receiver inside. Connecting the 10MHz external oscillator made things work nicely. (Or a sysmoBTS also does.) ~N -- - Neels Hofmeyr <[email protected]> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschäftsführer / Managing Directors: Harald Welte
