Snom 4S manual Current Ports

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[ S N O M 4 S N A T F I L T E R ]

was terminated because the maximum session time has been reached. This time is indicated by the P-Session-Timeout header.

4.11 Current Ports

It is important to see which calls are active on the filter. The Current Ports web page lists the calls where the filter performs relaying on media.

4.

The from and to-field show which participants are involved in this media relay. The start column shows you when the port was created.

In the destinations field the user may see more information about how the different streams in the SDP are mapped. Each line consists of information about one stream. The number in bold before the stream shows the stream index. If that stream has been mapped to another stream, the number in bold behind the colon indicates what stream it has been mapped to. The number behind the space shows the index in the SDP. Because a conversation can have more than one SDP, the index usually occurs in several places. The indexes are matched by their value, according to their position in the SDP. The next number in bold shows the port number.

The next field shows the default destination that was indicated in the SDP. If the destination has not been locked, that address is shown in brackets and the list of learned addresses is shown after it. An address is locked when the NAT Filter received a packet on this port from the location indicated in the SDP.

48 • Configuration

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Contents Snom 4S NAT Filter Admin Manual Snom 4S NAT Filter Version Table of Contents Snmp Overview Features ApplicationsSnom technology AG Overview Architecture NAT Filter and SIPNAT Signalling SIP How does NAT work?Symmetrical RTP Media RTP Classification of User AgentsProbing Media Paths Role of the NAT FilterOptimizing the Media Path for Symmetrical NATSBC Behaviour RegisteringRTP Relay Snom technology AG Scaling and Redundancy NATDetecting the right NAT Filter Requirements on User Agents Non NAT-Aware User AgentsSTUN/ICE-Aware User Agents Defining the Maximum Session Time Architecture Installation WindowsInstallation Snom technology AG Installation Snom technology AG Linux Rpm -ihv snomnatf-2.10.*.rpm Installation Logging Port BindingStandard Port Random Port System Settings LoggingPreparing Recovery General Outound ProxyMedia Ports Port BudgetsMedia Relay Controlling RoutingMultiple 2xx Handling Challenging Trusted AddressesMaximum Packet Size Silence Suppression Connection Oriented MediaRemoving Headers Codec Control Web Server IntegrationClir Addresses Timeout Settings Register TimeoutsCall Timeouts Security Settings Snom technology AG Outbound Proxy List System Information Server LogTrace Call History Current Ports Currently Handled UA Memory StatisticsConfiguration Web Server Integration Authentication Interface to the Web ServerSnom technology AG Web Server Integration Registration Call Initiation Snom technology AG Call Termination Snom technology AG Web Server Integration Setup of the SBC Setup of the ToolsAvailable OID OIDSnom technology AG Snmp Checklist for Installation Checklist for Installation Reader‘s Feedback Snom technology AG All rights reserved