The ones below work for me, try them out with an unused COT/COP first
For NIN DIT (Direct Inward Trunk to extension) which rings to default answering point
ADD-COP:1,DTMF&RLSB&RLSA&SPTR&NTON&DTM1,TA,TA,,;
ADD-COT:1,RCL&XFER&CHRT&CEOC&CEBC&CPS6&RCLS&BSHT&CECO&ICZL&ICZO&CCTN&CTLS&NTON,,;
CHA-TACSU

EN=X-X-X-X,COTNO=1,COPNO=1,COTX=1,DGTPR=*;
For DIT to Extension 1234
ADD-COP:2,DTMF&RLSB&RLSA&DITW&SPTR&NTON&DTM1,TA,TA,,;
ADD-COT:2,RCL&XFER&CHRT&CEOC&CEBC&CPS6&RCLS&BSHT&CECO&ICZL&ICZO&CTLS&NTON,,;
CHA-TACSU

EN=X-X-X-X,COTNO=2,COPNO=2,COTX=2,DGTPR=1234;