As you have an Option 81 system, you need to go into LD 143 to check the "Brand" feature is set as "2". Here is an example below.
>
LD 143
CCBR000
.
KSHO REC
Validating Keycode File /p/install/keycode.rec ... OK
System Parameters:
System Serial Number : 440100000
Software Version : 3521
System Type : Option 61C
Call Processor : CP PIV
Release : 4
Issue : 50W
NTI Order Number :
NT SDID - 1 :
NT SDID - 2 :
Date and Time of Manufacture : / / - : :
Note: ( ) indicates that information is not available
Licenses:
Loop : 0
Sys TNs : 32760
ACD DNs : 24000
AST : 1
LTID : 32760
DCH : 254
AML : 16
MPH DSL : 64
RAN CON : 0
RAN RTE : 512
MUS CON : 0
Brand Index : 2
ACD Agents : 10
Analogue Telephones : 80
Attendant Consoles : 32760
BRI DSL : 10000
CLASS Telephones : 0
Data Ports : 32760
Digital Telephones : 376
IP Users : 4
Phantom Ports : 32760
DECT Users : 16
DECT Visitor Users : 0
ITG ISDN Trunks : 0
Traditional Trunks : 32760
PCA : 0
H.323 Access Ports : 0
SIP Access Ports : 0
Basic IP Users : 0
SIP Converged Desktops : 0
SIP CTI TR87 : 0
Options Packages:
0-2 4-5 7-11 14 16-25 28-29
32-49 51-56 58-64 67 70-77 79-81
83 86-93 95 98-104 107-111 113
115-116 118-120 122-125 127-129 131-134 137-141
143-154 157 159-164 167 169-170 172-175
178-185 187-188 190-193 196 198 202-206
208-212 214-216 218 222 227-229 231
233-236 240 242-243 245-247 250-251 253-254
256 258-259 261-263 283 286 288-289
296 301 305-307 309 312 315-316
323-324 327-333 348 350-351 362 364
366-368 370 380-382 384 386-387 389
394 397-401 404 406-407
If it's "0" then you won't be able to change the default name.
All the best
Firebird Scrambler
Meridian Programmer in the UK
If it's working, then leave it alone!.