Description:
This error guide describes the various stages of analysis that can help identify the cause of an echo or halls during active conversations.
Analysis Steps (Basis)
- Does the error occur during internal and/or external calls?
- Does the error always or only sporadically occur?
- Is a user/phone affected by this error or all users/phones?
- Which provider type is in use (SIP or ISDN)?
- Does the error always occur on a specific line?
- Does the error change if the used ISDN cable is exchanged for a LAN cable?
Analysis Steps (Log Files)
In the text-based log files of STARFACE, problems with audio transmission are very difficult to analyze. The simplest and fastest way of analysis is to make a TCPdump and evaluate it with the program "Wireshark".
Analysis Via TCPdump
First, a TCPdump must be created on the STARFACE that records a conversation during which no audio data was transmitted (see also Enable TCPdump on the STARFACE oder System Status of the STARFACE). The following key data are required for the analysis with the "Wireshark" program:
- Exact time of conversation
- Type of call (e.g., from internal to external mobile number)
- Call number to which has been called
- Call number from which has been called
- IP address of the STARFACE
- IP address of all participating phones
- Type of provider (ISDN or SIP)