User's Manual

OSMAC Base User Manual
Page 11
Manu.01_0405
3.4 Receiving Telephone Calls at the Two-Way radio
The OSMAC Base can also be used to route telephone calls from the telephone line to two-way-radios.
To initiate a phone call from the telephone interface:
1. Dial the phone number of the telephone line connected to the OSMAC Base.
2. The will display "Phone Ringing" when the ring signal is detected and wait for the number of rings
programmed in the Configuration Menu.
3. The OSMAC Base will answer the phone in a manner determined by the settings of the "Remote
Paging" and "Call Forwarding" modes as set in the Configuration Menu. The display will read "Phone
in Use."
Remote
Paging
Call
Forwarding
OSMAC Base Operation When Called
Enabled Enabled
Phone answered with a "Enter Pager Number"
prompt.
User may press * 5 to request a phone patch and
send "ringing" tones to the two-way-radio users.
User may enter the number of a pager to be paged
and a numeric message.
Enabled Disabled
Phone answered with a "Enter Pager Number"
prompt.
"Error" tones are generated if the user presses * 5 .
User may enter the number of a pager to be paged
and a numeric message.
Disabled Enabled
Phone answered with "ringing" tones which are
also sent to the two-way-radio users to request a
phone patch.
Disabled Disabled
The phone line is not answered
4. The telephone user must enter *5 to request a "reverse autopatch" phone call if "Remote Paging"
is enabled.
5. If "Call Forwarding" is enabled and the telephone line rings, the OSMAC Base will transmit a
simulated ring signal over the air. To answer the call, a mobile user must press the
* key to take the
telephone line off-hook. To hangup the call, either the phone or mobile user must press the
# key.
6. Once the called party answers, the phone VOX circuit takes over. When the phone user speaks, the
OSMAC Base transmits his or her voice.
7. The mobile user will hear a periodic ticking sound as the OSMAC Base briefly switches to receive
mode to determine whether the mobile user wishes to interrupt the conversation and has begun
transmitting.
8. If neither party is talking, a single beep will be heard periodically to remind the mobile user that the
phone patch is still in operation.
9. A timeout timer exists in order to shut down the phone patch automatically in the event that the
mobile user goes out of range or has a battery outage. The length of the timer is set in the
Configuration Menu. Warning beeps or a voice message will be sent a few seconds before the
timeout timer expires and the phone call is terminated. The mobile user or phone user must press
*
to reset the timeout timer and continue the phone call.
10. End the conversation from the two-way radio or phone by pressing the
# key. A high, then low beep
sequence or a voice message should be heard to confirm the disconnect.