GAI-Tronics ICP9000 Navigator Series Console Operator's Manual - Manual (Page 54)

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Answering Incoming Calls
When an incoming call is detected, an audible ring is heard through the select speaker and the PHONE
indicator flashes. To answer an incoming call, press the toolbar PHONE button. The PHONE indicator
lights and the Phone window opens. At this point, the call proceeds and behaves as described in the
Using the Direct Enhanced Full Duplex Phone Interface section.
Phone Patch
Phone Patch allows the phone caller to be connected to a channel for voice communication between the
two. The operator is able to monitor both phone and radio audio. A phone patch can be either an
inbound phone caller requesting a radio channel, or a radio channel requesting a phone line.
To activate a phone patch, press the PHONE PATCH button. The phone caller is placed on hold and the
PHONE PATCH indicator begins to flash. The flashing PHONE PATCH indicator signals the operator to
select the radio channel for the phone patch. The TRANSMIT button now allows voice transmission on
the selected phone patch channel. Once the operator has contacted the field unit to relay that a phone
patch is being established, the operator must take the phone off hold by pressing the
PHONE HOLD
button.
At this point, the PHONE PATCH indicator lights and the phone patch is established. Since the patch is
based on voice detection on the radio channel and phone, the phone audio is forced to half-duplex mode.
The operator should now announce to the phone caller and the field unit that the patch is established
using the
TRANSMIT button. The phone caller and field unit can have a half-duplex, one-at-a-time,
conversation. At anytime during the phone patch, the console operator can communicate with both the
phone caller and the field unit by pressing and holding the
TRANSMIT button. The console operator can
also communicate with the field unit without the knowledge of the phone caller by using the channel
TRANSMIT button on the phone patch channel.
To pause the phone patch without terminating it, the operator can put the phone caller on hold. Placing
the phone caller on hold during a phone patch maintains the patch, but allows the console operator to
conduct other business or have a conversation with the field unit without interference from the phone
caller. Removing the phone caller from hold continues the patch as described earlier.
The phone patch can be terminated by either pressing the toolbar PHONE button or by pressing the
PHONE PATCH button.