PT/PS
During 3- to 7-party conference
CONF
Press CONF.
On-hook.
PT/PS
OR
OR
(CO)
(ICD Group)
Press flashing green CO, ICD Group, PDN, SDN, or INTERCOM.
PT/PS
During a conversation
On-hook.
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INTERCOM
OR
OR
(PDN)
(SDN)