3GPP TS 27.010 V19.0.0 (2025-09), Section 5.4.1 states that when a SABM frame is dropped, the TE must wait for the T1 timer to expire before retrying. The T1 timer is described in 3GPP TS 27.010 V19.0.0 (2025-09), Section 5.4.5. This is not currently implemented, as we do not retry at all.
The lack of this feature can manifest as the channels being unusable if we try to run the multiplexer before the TA has transitioned into the CMUX mode.
As a temporary workaround, users can add a delay of a few tens of milliseconds before running the multiplexer.
3GPP TS 27.010 V19.0.0 (2025-09), Section 5.4.1 states that when a SABM frame is dropped, the TE must wait for the T1 timer to expire before retrying. The T1 timer is described in 3GPP TS 27.010 V19.0.0 (2025-09), Section 5.4.5. This is not currently implemented, as we do not retry at all.
The lack of this feature can manifest as the channels being unusable if we try to run the multiplexer before the TA has transitioned into the CMUX mode.
As a temporary workaround, users can add a delay of a few tens of milliseconds before running the multiplexer.