Telex IP-223 iDen Interface NI-223 Plus - Manual (Page 9)

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4.2.1 A-Key, Alert
The ‘A’ key is used to send an Alert function over the iDen®
system. Using the standard dialing keys, enter the ID of the
radio. Press the “A” key to send the alert.
4.2.2 B-Key, Send
The “B” key is used as a send button when placing a manually
dialed phone call. Take the phone line offhook, dial the
number, and then press the “B” key to connect the call.
4.2.3 C-Key, Group Call
Enter the group number to be called followed by the “C” key.
When the PTT button is pressed, a group call will be completed.
4.2.4 D-Key, Direct Connect Call
Enter the Direct Connect number then press the “D” key. When
the PTT button is pressed, the Direct Connect call will be
completed.
5 Audio Alignment Procedure
5.1.1 Transmit Audio Alignment
The Transmit audio (Audio IN) to the iDen® Radio should not be overdriven. The levels to the
radio should be at or near -5dBm as measured at the IP-223 radio test point on the front of the
unit. The TX Pot on the front panel of the IP-223 will be near 9-12 o’clock depending on the
microphone source. Alternatively, the Software Gains may be adjusted to gain more granularity
in the pot setting to accommodate different microphones. Figure 8 shows an example Transmit
Gain setting. From here a simple talk test will result in good audio levels.
Figure 8 IP-223 Transmit Audio Gain Setup
Figure 7 - Manual DTMF key layout
with iDen® commands