Appendix N. Configuring a software media server

<?xml version="1.0" encoding="utf-8"?>
<config>
    <general log-level="3" max-calls="1000" max-in-group="3"
	tread-cnt="2" syslog="no"/>
    <transport bind-addr="127.0.0.1" port="5080" transport="udp" />
    <media use-vad="no" port-start="15000" port-range="5000" rtcp-timeout="15" />
    <codec pcma="1" pcmu="2" g729="3" ilbc="4" gsm="5" g722="6" />
    <accounts>
        <dynamic msr_name="msr.smg" realm="sip:127.0.0.1:5000" dtmf_mode="rfc+inband+info" auth_name="user" auth_password="password" />
    </accounts>
    <pbyte>
        <mcc bind-addr="127.0.0.1" port="51000" />
    </pbyte>
</config>

where:

• general — general settings of media server:
  • log-level — logs level. The larger the value, the more information is in the logs (by default: "3");
  • max-calls — the maximum number of calls simultaneously served by the media server;

  • max-in-group — maximum number of subscribers in a group within a conference;

    If the Conference Call service is used with a large number of participants, then it is necessary to increase the value of this parameter. The maximum value is 4000.

• transport — transport settings:
  • bind-addr — IP address that the media server will use for SIP signaling (by default: "127.0.0.1"). This parameter should be configured in accordance with the network host settings;
  • port — port number for SIP (by default: "5080"). If 5040 port is already busy on the host where the media server is installed, then the value of this parameter should be changed;
  • transport — transport type (by default: "udp"), takes values: "udp", "tcp", "udp+tcp".

    This parameter does not require changes.

     
• media — media parameters:
  • use-vad — enable Voice Activity Detection (by default: "no"). This parameter does not require changes;
  • rtcp-timeout — if RTCP does not arrive to the media server during this period of time, then you can assume that the client is inactive (by default: "0" – not used). When using the control function, the control is enabled only after receiving one RTCP packet from the opposite side;
  • rtp-timeout — RTP traffic timeout, similar to the previous parameter (by default: "0" – not used);
  • port-start — the beginning of the range of ports that will be used for RTP streams (by default: "12000");
  • port-range — range size (by default: "1024");
  • thread-cnt — number of working streams for processing media data (dtmf-to-total-energy, by default: "2");
• codec — priotiry of codecs (1 – maximum, 255 – minimum, 0 – the codec is disabled). Supported codecs:
  
  • pcma
  • pcmu
  • ilbc
  • gsm 
  • g722
  • g729
  • t38
• accounts — all accounts for registering the media server. Can contain up to 32 acc elements;
• dynamic — separate account with parameters:
  • msr_name — the MSR name as displayed on ECSS;
  • realm — registration server in the sip:domain format. Specify the SIP server address for media server registration;
  • dtmf_mode — DTMF detection mode ("rfc", "inband", "info"). This parameter should be configured in accordance with the DTMF sending settings on the subscriber device.
  • auth_name — user name used for authorization;
  • auth_password — password for authorization.
• pbyte — setting up pbyte connections;
  • mcc —  setting up the control connection of the media control channel;
  • bind-addr — IP address where the connection will be expected;
  • port — port for incoming connections (by default: 5700).

• conf_dir path — path to the folder that will contain the MSR configurations. These configurations will override the default configuration config.xml

  Separately, you need to pay attention to the media section; the port-start and port-range parameters should not overlap with the parameters used on the SMG.