Cisco CP-7970G Administration Manual page 185

Chapter 7 Viewing Model Information, Status, and Statistics on the Cisco Unified IP Phone
Procedure for Creating a Test Tone
When measuring echo, make sure you first set the input and output levels to 0 dB gain/attenuation on the
Note
trunk. This is set for the gateway (in Cisco Unified Communications Manager for MGCP) or under IOS
CLI for H.323 or SIP.
Step 1 Place a call.
Step 2 Once the call is established, press the Help button twice, or press Settings > Status > Call Statistics.
The Call Statistics screen and Tone softkey should appear.
Press the Tone softkey.
Step 3
The phone generates a 1004 Hz tone at -15 dBm. For a good network connection, the tone sounds at the
call destination only. For a bad network connection, the phone generating the tone may receive echo from
the destination phone.
Step 4 To stop the tone, end the call.
For information on interpreting the results of test tone for volume and echo, refer to the following
document:
http://www.cisco.com/en/US/docs/ios/solutions_docs/voip_solutions/EA_ISD.html
OL-23092-01
Cisco Unified IP Phone Administration Guide for Cisco Unified Communications Manager 8.5
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