| ucp.hdr.LEN | Length | Unsigned 16-bit integer | Total number of characters between <stx>...<etx>. |
| ucp.hdr.OT | Operation | Unsigned 8-bit integer | The operation that is requested with this message. |
| ucp.hdr.O_R | Type | Unsigned 8-bit integer | Your basic 'is a request or response'. |
| ucp.hdr.TRN | Transaction Reference Number | Unsigned 8-bit integer | Transaction number for this command, used in windowing. |
| ucp.message | Data | No value | The actual message or data. |
| ucp.parm | Data | No value | The actual content of the operation. |
| ucp.parm.AAC | AAC | String | Accumulated charges. |
| ucp.parm.AC | AC | String | Authentication code. |
| ucp.parm.ACK | (N)Ack | Unsigned 8-bit integer | Positive or negative acknowledge of the operation. |
| ucp.parm.A_D | A_D | Unsigned 8-bit integer | Add to/delete from fixed subscriber address list record. |
| ucp.parm.AdC | AdC | String | Address code recipient. |
| ucp.parm.BAS | BAS | Unsigned 8-bit integer | Barring status flag. |
| ucp.parm.CPg | CPg | String | Reserved for Code Page. |
| ucp.parm.CS | CS | Unsigned 8-bit integer | Additional character set number. |
| ucp.parm.CT | CT | Date/Time stamp | Accumulated charges timestamp. |
| ucp.parm.DAdC | DAdC | String | Diverted address code. |
| ucp.parm.DCs | DCs | Unsigned 8-bit integer | Data coding scheme (deprecated). |
| ucp.parm.DD | DD | Unsigned 8-bit integer | Deferred delivery requested. |
| ucp.parm.DDT | DDT | Date/Time stamp | Deferred delivery time. |
| ucp.parm.DSCTS | DSCTS | Date/Time stamp | Delivery timestamp. |
| ucp.parm.Dst | Dst | Unsigned 8-bit integer | Delivery status. |
| ucp.parm.EC | Error code | Unsigned 8-bit integer | The result of the requested operation. |
| ucp.parm.GA | GA | String | GA?? haven't got a clue. |
| ucp.parm.GAdC | GAdC | String | Group address code. |
| ucp.parm.HPLMN | HPLMN | String | Home PLMN address. |
| ucp.parm.IVR5x | IVR5x | String | UCP release number supported/accepted. |
| ucp.parm.L1P | L1P | String | New leg. code for level 1 priority. |
| ucp.parm.L1R | L1R | Unsigned 8-bit integer | Leg. code for priority 1 flag. |
| ucp.parm.L3P | L3P | String | New leg. code for level 3 priority. |
| ucp.parm.L3R | L3R | Unsigned 8-bit integer | Leg. code for priority 3 flag. |
| ucp.parm.LAC | LAC | String | New leg. code for all calls. |
| ucp.parm.LAR | LAR | Unsigned 8-bit integer | Leg. code for all calls flag. |
| ucp.parm.LAdC | LAdC | String | Address for VSMSC list operation. |
| ucp.parm.LCR | LCR | Unsigned 8-bit integer | Leg. code for reverse charging flag. |
| ucp.parm.LMN | LMN | Unsigned 8-bit integer | Last message number. |
| ucp.parm.LNPI | LNPI | Unsigned 8-bit integer | Numbering plan id. list address. |
| ucp.parm.LNo | LNo | String | Standard text list number requested by calling party. |
| ucp.parm.LPID | LPID | Unsigned 16-bit integer | Last resort PID value. |
| ucp.parm.LPR | LPR | String | Legitimisation code for priority requested. |
| ucp.parm.LRAd | LRAd | String | Last resort address. |
| ucp.parm.LRC | LRC | String | Legitimisation code for reverse charging. |
| ucp.parm.LRP | LRP | String | Legitimisation code for repitition. |
| ucp.parm.LRR | LRR | Unsigned 8-bit integer | Leg. code for repitition flag. |
| ucp.parm.LRq | LRq | Unsigned 8-bit integer | Last resort address request. |
| ucp.parm.LST | LST | String | Legitimisation code for standard text. |
| ucp.parm.LTON | LTON | Unsigned 8-bit integer | Type of number list address. |
| ucp.parm.LUM | LUM | String | Legitimisation code for urgent message. |
| ucp.parm.LUR | LUR | Unsigned 8-bit integer | Leg. code for urgent message flag. |
| ucp.parm.MCLs | MCLs | Unsigned 8-bit integer | Message class. |
| ucp.parm.MMS | MMS | Unsigned 8-bit integer | More messages to send. |
| ucp.parm.MNo | MNo | String | Message number. |
| ucp.parm.MT | MT | Unsigned 8-bit integer | Message type. |
| ucp.parm.MVP | MVP | Date/Time stamp | Mofified validity period. |
| ucp.parm.NAC | NAC | String | New authentication code. |
| ucp.parm.NAdC | NAdC | String | Notification address. |
| ucp.parm.NB | NB | String | No. of bits in Transparent Data (TD) message. |
| ucp.parm.NMESS | NMESS | Unsigned 8-bit integer | Number of stored messages. |
| ucp.parm.NMESS_str | NMESS_str | String | Number of stored messages. |
| ucp.parm.NPID | NPID | Unsigned 16-bit integer | Notification PID value. |
| ucp.parm.NPL | NPL | Unsigned 16-bit integer | Number of parameters in the following list. |
| ucp.parm.NPWD | NPWD | No value | New password. |
| ucp.parm.NRq | NRq | Unsigned 8-bit integer | Notification request. |
| ucp.parm.NT | NT | Unsigned 8-bit integer | Notification type. |
| ucp.parm.NoA | NoA | Unsigned 16-bit integer | Maximum number of alphanumerical characters accepted. |
| ucp.parm.NoB | NoB | Unsigned 16-bit integer | Maximum number of data bits accepted. |
| ucp.parm.NoN | NoN | Unsigned 16-bit integer | Maximum number of numerical characters accepted. |
| ucp.parm.OAC | OAC | String | Authentication code, originator. |
| ucp.parm.OAdC | OAdC | String | Address code originator. |
| ucp.parm.ONPI | ONPI | Unsigned 8-bit integer | Originator numbering plan id. |
| ucp.parm.OPID | OPID | Unsigned 8-bit integer | Originator protocol identifier. |
| ucp.parm.OTOA | OTOA | String | Originator Type Of Address. |
| ucp.parm.OTON | OTON | Unsigned 8-bit integer | Originator type of number. |
| ucp.parm.PID | PID | Unsigned 16-bit integer | SMT PID value. |
| ucp.parm.PNC | PNC | Unsigned 8-bit integer | Paging network controller. |
| ucp.parm.PR | PR | Unsigned 8-bit integer | Priority requested. |
| ucp.parm.PWD | PWD | No value | Current password. |
| ucp.parm.RC | RC | Unsigned 8-bit integer | Reverse charging request. |
| ucp.parm.REQ_OT | REQ_OT | Unsigned 8-bit integer | UCP release number supported/accepted. |
| ucp.parm.RES1 | RES1 | String | Reserved for future use. |
| ucp.parm.RES2 | RES2 | String | Reserved for future use. |
| ucp.parm.RES4 | RES4 | String | Reserved for future use. |
| ucp.parm.RES5 | RES5 | String | Reserved for future use. |
| ucp.parm.RP | RP | Unsigned 8-bit integer | Repitition requested. |
| ucp.parm.RPI | RPI | Unsigned 8-bit integer | Reply path. |
| ucp.parm.RPID | RPID | String | Replace PID |
| ucp.parm.RPLy | RPLy | String | Reserved for Reply type. |
| ucp.parm.RT | RT | Unsigned 8-bit integer | Receiver type. |
| ucp.parm.R_T | R_T | String | Message number. |
| ucp.parm.Rsn | Rsn | Unsigned 16-bit integer | Reason code. |
| ucp.parm.SCTS | SCTS | Date/Time stamp | Service Centre timestamp. |
| ucp.parm.SM | SM | String | System message. |
| ucp.parm.SP | SP | Date/Time stamp | Stop time. |
| ucp.parm.SSTAT | SSTAT | Unsigned 8-bit integer | Supplementary services for which status is requested. |
| ucp.parm.ST | ST | Date/Time stamp | Start time. |
| ucp.parm.STYP0 | STYP0 | Unsigned 8-bit integer | Subtype of operation. |
| ucp.parm.STYP1 | STYP1 | Unsigned 8-bit integer | Subtype of operation. |
| ucp.parm.STx | STx | No value | Standard text. |
| ucp.parm.TNo | TNo | String | Standard text number requested by calling party. |
| ucp.parm.UM | UM | Unsigned 8-bit integer | Urgent message indicator. |
| ucp.parm.VERS | VERS | String | Version number. |
| ucp.parm.VP | VP | Date/Time stamp | Validity period. |
| ucp.parm.XSer | Extra services: | No value | Extra services. |
| ucp.xser.service | Type of service | Unsigned 8-bit integer | The type of service specified. |