Nortel Meridian 1 option 11C Planning And Installation Manual page 315

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Note: When you are activating a 500-type telephone, you must use a
2500-type telephone to define the features. Once you have done this,
unplug the 2500-type telephone and replace it with the 500-type
telephone that you are activating.
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Type of telephone: Support staff telephone with toll denied
Intended use: Business telephone
Assigned Class of Service options:
TLD/C6A/CFXD/DTN/FND/GPUA/LNA/XFA/XRA/FBD
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Type of telephone: Support staff telephone
Intended use: Business telephone
Assigned Class of Service options:
UNR/C6A/CFXD/DTN/FND/GPUA/LNA/XFA/XRA/FBD
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Type of telephone: Support staff telephone with message indication lamp
Intended use: Business telephone
Assigned Class of Service options:
MWA/TLD/C6A/CFXD/DTN/FNA/GPUA/LNA/XFA/XRA/FBD/LPA
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Type of telephone: Support staff telephone with message indication lamp
Intended use: Business telephone
Assigned Class of Service options:
MWA/UNR/C6A/CFXD/DTN/FNA/GPUA/LNA/XFA/XRA/FBD/LPA
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