l1ctl_tx_fbsb_req(ms, ms->test_arfcn,

L1CTL_FBSB_F_FB0 | L1CTL_FBSB_F_SB, 100, 0,

app_state.ccch_mode, dbm2rxlev(-85));

before switching channels.

Now most of the channels stick on for much longer, but a few drop within seconds.

But I cannot know for sure if this has "worked" until I can decode and recognise some FACCH commands.

On AMR HR I get data like:

TCH/H (hl=0, hu=0) in FN=1864368 DL SACCH

Detected FACCH (hl=1, hu=0) in FN=1864369 DL

Detected FACCH (hl=1, hu=0) in FN=1864371 DL

Detected FACCH (hl=1, hu=1) in FN=1864373 DL

Detected FACCH (hl=1, hu=1) in FN=1864375 DL

Detected FACCH (hl=1, hu=1) in FN=1864386 DL

Detected FACCH (hl=1, hu=1) in FN=1864388 DL

Detected FACCH (hl=1, hu=1) in FN=1864390 DL

Detected FACCH (hl=1, hu=1) in FN=1864392 DL

TCH/H (hl=0, hu=0) in FN=1864394 DL SACCH

Detected FACCH (hl=1, hu=1) in FN=1864395 DL

Detected FACCH (hl=1, hu=1) in FN=1864397 DL

Detected FACCH (hl=1, hu=1) in FN=1864399 DL

Detected FACCH (hl=1, hu=0) in FN=1864401 DL

Detected FACCH (hl=1, hu=1) in FN=1864403 DL

Detected FACCH (hl=1, hu=0) in FN=1864405 DL

Detected FACCH (hl=1, hu=1) in FN=1864408 DL

Detected FACCH (hl=1, hu=0) in FN=1864410 DL

TCH/H (hl=0, hu=0) in FN=1864420 DL SACCH

which does not look correct because I think the FACCH should be in groups of 4.

Any explanations? Suggestions?

On Thu, Jan 31, 2013 at 8:38 PM, Pe <oxccoxcc@yandex.ru> wrote:

Hi, Bhaskar11
Did you resolve problem with low snr?
Do you make synchronization on SCH before going to TCH, after Assignment
Command?

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