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Transceiver::expectedCorrType(): RACH is always 8-bit on PTCCH/U

It does not make sense for the MS to use 11-bit Access Bursts on
PTCCH/U because the payload does not matter, only the ToA does.

Change-Id: I5fb9f1c6810cdcd26a885b183e414d01d422eb28
---
M Transceiver52M/Transceiver.cpp
1 file changed, 1 insertion(+), 1 deletion(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-trx refs/changes/74/29874/1

diff --git a/Transceiver52M/Transceiver.cpp b/Transceiver52M/Transceiver.cpp
index 42aa93e..cbe1e27 100644
--- a/Transceiver52M/Transceiver.cpp
+++ b/Transceiver52M/Transceiver.cpp
@@ -584,7 +584,7 @@
   case XIII: {
     int mod52 = burstFN % 52;
     if ((mod52 == 12) || (mod52 == 38))
-      return cfg->ext_rach ? EXT_RACH : RACH;
+      return RACH; /* RACH is always 8-bit on PTCCH/U */
     else if ((mod52 == 25) || (mod52 == 51))
       return IDLE;
     else /* Enable 8-PSK burst detection if EDGE is enabled */

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