Figure 22: Download Analog Trace; Figure 23: A Key Dial-Up Fxo - Grandstream Networks UCM6 Series Manual

5. Save the Downloaded file to a local folder on your computer, and unzip it.
Note: Users can set Record Direction to Receive since we will be analyzing received file only.
Another option is available to take analog record using A Key Dial-up FXO:
Users can directly set a PSTN number on the "External Extension" text box to troubleshoot issues related
to the analog trunk easily, the following steps shows how to use this feature:
1. Configure analog trunk on UCM, including outbound route.
2. Enter a reachable external number in "External Extension".
3. Press "Start" button. The call will be initiated to the external number.
4. Answer and finish the call before pressing "Stop" button.
5. The trace will be available for analysis to download after output result shows "Done! Click on
Download to download the captured packets".

Figure 22: Download Analog Trace

Figure 23: A key dial-up FXO

UCM6XXX Analog Trunks Guide
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