Remote Logging; Ssh; Capturing The Phone Screen; Running The Tcpdump Tool - AudioCodes C450HD User And Administrator Manual

7.2.2

Remote Logging

Remote Logging via Syslog provides the same log level as Device Diagnostics (performed via the
Microsoft Admin Portal) with some additional information that may be relevant to device issues
(not Teams application issues).
Diagnostics via the Microsoft Admin Portal are saved to the device sdcard and collected after the
event. Remote Logging via Syslog is different. The logs are collected in real time.

To enable Remote Logging via Syslog:
1. Log in to the device as Administrator and go back.
2. In the 'Device administration' screen, select Debugging.
3. Select Remote logging.
4. Configure the 'Remote IP address' and 'Remote port' and enable 'Remote Logging'; the
device starts sending logs to the Syslog server.
7.2.3

SSH

After Administrator sign-in for which you need to know the administrator username and password
admin and 1234 are the defaults), the phone is accessed by default via Secure Shell (SSH)
cryptographic network protocol.
SSH access allows network administrators more debugging capabilities. For example:
Pulling files from the phone sdcard (using the curl command)

Capturing the phone screen (see Section

Running the tcpdump tool (see Section

7.2.3.1

Capturing the Phone Screen

This feature allows network administrators to effectively collaborate to debug issues.

To capture the phone screen:
1.
Access the phone via SSH
2. Run a TFTP client on your PC
3. Set the phone to the screen to capture
4. Run the commands:
screencap /sdcard/screen_cap.png
curl -T /sdcard/screen_cap.png tftp://host_ip
7.2.3.2

Running the tcpdump Tool

Running under the command line, this common packet analyzer allows network administrators to
display TCP/IP and other packets transmitted or received over the IP telephony network.
 To run tcpdump:
1.
Access the phone via SSH and run the following commands:
cd /storage/emulated/0/
mkdir recording
User's and Administrator's Manual
7.2.3.1 below for more information)
7.2.3.2 below for more information)
56
450HD IP Phone
Document #: LTRT-13263