The settings that work best when using Motorola radios with the SMSC (Text Capture) feature on BM:

codeplug CPS2/RM (CPS1 may have differing designators):

General / General Settings / General / TX Preamble Duration (ms): 0
(this is to wake up receiving radio from battery save or from scanning - not required in BM, as repaters always do listen, so value 0 reduces TX time and channel occupation)

General / General Settings / Network / Services / ARS Radio ID: 262999
(the master server ID the radio should register on power-up or channel change, to announce its presence)

Zone-Channel Assignment / "Zone Name" / "Channel Name" / General / ARS: On System/Site Change
(the condition when a registration should happen)

Zone-Channel Assignment / "Zone Name" / "Channel Name" / General / IP Site Connect (X) 
(turned on to allow the radio to register and roam)

Zone-Channel Assignment / "Zone Name" / "Channel Name" / General / Messaging Delay (ms): 510
(the time to wait for confirmation on messaging, not sure if it makes a difference, but a long delay time does do no harm as we have a large network with sometimes higher latencies)

Zone-Channel Assignment / "Zone Name" / "Channel Name" / General / Compressed UDP Data Header: DMR Standard 
(to save TX time / channel occupation without reducing reliabilty)

Zone-Channel Assignment / "Zone Name" / "Channel Name" / General / Text Message Type: Advantage
(Motorola text messaging format with confirmation from the master, works best)

Zone-Channel Assignment / "Zone Name" / "Channel Name" / TX / Data Call Confirmed (_)
(may lead to non-ACKed messages or even SMS bombing when enabled, ACK is handled without this option on another protocol level)


This is just FYI / background information:

dash:

Setting China/Motorola makes only one difference:

China Radio - FEC 1/2, L4 unconfirmed data

Motorola - FEC 3/4, L4 confirmed data