ASTRO XTS 2500/XTS 2500I Model III 59
Common Radio Features
Phone Call Display and Alert Prompts
• When you press the PTT 
button and the phone system 
is not available, a long tone 
sounds. Press h button, to 
hang up. Radio returns to the 
home display.
• When a channel is not 
available, a busy tone sounds. 
The radio will automatically 
connect when a channel 
opens.
• When the phone system is 
busy, a long tone sounds. 
Try your call later. Press h 
button, to hang up. Radio 
returns to the home display.
• The system does not 
acknowledge your call. Press 
h button, to hang up. Radio 
returns to the home display.
Notes: •  A high-pitched tone, generated when you release the PTT 
button, indicates to the landline party that he or she can 
begin talking. 
• You have the option of sending additional digits (overdial), 
such as an extension number, or credit card or PIN 
numbers, to the phone system. If the radio is programmed 
for live overdial, every digit entered after the call is 
connected is sent to the phone system.
• If the radio is programmed for buffered overdial, the digits 
pressed are entered into memory and then sent when the 
PTT button is pressed. Press the PTT to send either digits 
or voice, but not both at the same time.
NO PHONE
PHONE BUSY
PHONE BUSY
NO ACKNOWLDG
94C06.book  Page 59  Wednesday, June 23, 2010  11:41 AM