answer the second call by disconnecting the current call or placing it on hold using EFA. For details, consult
your telephone company.
Call Waiting Caller ID (Visual Caller ID):
When using the call waiting tone supplied by the telephone company over analog lines, the caller’s
telephone number and name can be received. Either the name or the number will flash on the display for
five seconds, followed by a 10-second pause, then flash again for five seconds.
Note that the received caller information will not be displayed on telephones or wireless phones connected
to SLT ports.
•OHCA and Whisper OHCA are enabled or disabled by the Class of Service (COS) of the calling extension.
•OHCA and Whisper OHCA are not compatible with some telephone types. In such cases, a Call Waiting
tone will be sent to the called extension.
OHCA Mode of
Calling
Extension’s COS
Called Extension’s Call Waiting Mode
OFF
ON
Call Waiting Tone OHCA Whisper OHCA
Disable Call Waiting
disabled
Call Waiting tone Call Waiting tone Call Waiting tone
Enable Call Waiting
disabled
Call Waiting tone OHCA (or Call
Waiting tone)
Whisper OHCA (or
Call Waiting tone)
•The notification receiving methods (call waiting tone, OHCA, and Whisper OHCA) are available when the
called extension is having a conversation with another party. If the extension is not having a conversation
but is unavailable to receive the notification (dialing a number, for example), the calling extension will be
kept waiting until the called extension becomes available. Even while waiting, the calling extension will
hear a ringback tone.
•If none of these methods of receiving notification (call waiting tone, OHCA, or Whisper OHCA) are set at
the called party, the caller will hear a reorder tone after trying to send a call waiting notification.
PC Programming Manual References
3.10 [1-1] Slot—Card Property - LCO type— Caller ID—Caller ID Signaling
4.8 [2-6-1] Numbering Plan—Main—Features
→Manual Call Waiting for Extension Call
→ Automatic Call Waiting
4.10 [2-6-3] Numbering Plan—B/NA DND Call Feature
→BSS / OHCA / Whisper OHCA / DND Override
→ BSS / OHCA / Whisper OHCA / DND Override-2
4.17 [2-9] System Options—Option 5— Call Waiting—Automatic Call Waiting for Extension Call
6.1 [4-1-1] Wired Extension—Extension Settings
→Option 2— Manual C. Waiting for Extension Call
→Option 2— Automatic C. Waiting
→Option 4— Call Waiting Tone Type
6.10 [4-2-1] Portable Station—Extension Settings
→Option 2— Manual C. Waiting for Extension Call
→Option 2— Automatic C. Waiting
→Option 4— Call Waiting Tone Type
Feature Manual References
3.1.3 Call Log, Incoming
50 Feature Manual Document Version 2008-11
3.1.9 CALL WAITING FEATURES