System Status displays the configured and free SIP Channel license count in the top of the SIP trunk screen. In addition, where the SIP Trunk requires registration, the status of the primary and secondary registration appear in the summary section of the Trunk Status Screen for the SIP trunk.

Information Displayed

• Peer Domain Name
  The name of the service from the line form.
• Gateway Address
  Gateway IP address from the VoIP form.
• Line Number
  Defined in the system configuration.
• Number of Administered Channels
  The number of channels from the line form.
• Total Channels in Use
  The total number of channels that have associated call references.
• Administered Compression
  The compression mode from the VoIP form.
• Silence Suppression
  Either On or Off.

• Channels Table
  This table displays the following details:

• Channel Number
  Click on the row to view details of the call.
• URI Group
  The URI Group via which the system routed the call in or out of the trunk. If there is no Call Ref , the URI Group is blank.

• Call Ref
  Call reference, assigned by the system and associated with the line in use. When a trace is in progress, any calls on the trunk will show (i) next to the Call Ref. If you select Call Details while a trace is in progress, the screen remains unchanged and a pop-up window appears which contains details about the selected call. The pop-up shows the state of the call at the time of selection and does not update. See Trace .
• Current State
  The current state of the call associated with the button. See Call States .
• Time in State
  Reset to zero each time there is a state change.

• IP Address from Connection
  DirectMedia (H.323 only), RTP Relay or VCMs .
• CODEC
  Available via SIP message and may change throughout the call.
• Connection Type
  Either RTP Relay or VCM .

• Caller ID or Dialed Digits
  The information displayed depends on the call direction.

• Incoming Calls
  The Caller ID name and number. System Status displays None if the system received no caller ID.
• Outgoing Calls
  The digits sent to the central office.

• Other Party on Call
  Contains one of the following:

• Direction of Call
  Displays the call as either Incoming or Outgoing .

• Quality of Service (QoS)
  Normal data packets can prevent or delay voice data from getting across the link, causing unacceptable speech quality. System Status provides the following information. The system calculates the statistics as defined in RFC 1889.

• Round Trip Delay
• Receive Jitter
• Transmit Jitter
• Receive Packet Loss
• Transmit Packet Loss

Buttons

The following buttons can appear on this screen:

• Trace
  Starts a trace of the rows selected. System Status displays a trace for each call associated with the selected trunk or extension. See Trace .

• Trace All
  Starts a trace for the whole trunk group or extension. System Status displays a trace for all calls associated with the trunk or extension. See Trace .

• Pause
  Stops the screen from updating. The button label and function changes to Resume when the screen is paused.

• Resume
  Resumes updating screen in real time. When pressed, the button label and function changes to Pause .

• Ping
  Perform a Ping action from the selected interface (system, line or extension) and display the results. See Ping .

• Call Details
  Displays call details for the selected call, trunk or trunk channel.

• Print...
  Prints all information available in the current screen (including any information currently scrolled off).

• Save As...
  Saves the information shown on the screen to a text file (TXT or CSV). You can only save trace screens as CSV text files.

• Graceful Shutdown
  Cause the selected SIP trunk to block any additional calls and go into Out of Service (OOS) state when all current calls on the trunk have ended.

• Cancel Shutdown
  Cancel the graceful shutdown of the selected SIP trunk if not completed. If the trunk has completed the graceful shutdown, select Force Into Service .

• Force Into Service
  Take the selected SIP trunk out of 'Out of Service' (OOS) status.

• Force Out of Service
  Force the selected SIP trunk into 'Out of Service' (OOS) status. This immediately disconnects any current calls on the trunk.