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- From the
you can set up the cipher list of theXref AnchorName siptls_conf
. This is the list list of accepted cipher suite, using OpenSSL format. Check at http://www.openssl.org/docs/apps/ciphers.html#CIPHER_LIST_FORMAT. Usually you can leave the default values.Brand brand server - From SIP/TLS it's is possible to set up the cipher list for https HTTPS protocol.
2.4.2 RTP
"The Real-time Transport Protocol (RTP) defines a standardized packet format for delivering audio and video over IP networks" (quote from Wikipedia).
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Strictrtp if enabled, RTP packets that do not come from the source of the RTP stream will be dropped.
Rtp timeout
Rtp timeout sets up the amount of seconds one server can wait without dealing RTP packages on one call's leg. This value is connected to client's setup and it gives you the fault tolerance time of one call.
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Rtp timeout is used in combination with Strictrtp to enable call roaming: during network change events RTP stream is lost until one new UDP connection is established between client and server. Rtp timeout is the maximum amount of seconds one server can wait before considering such connection as lost and thus hang up any related ongoing call. |
2.4.3 Jitter Buffer
Jitter is Jitter is the variation in latency as measured in the variability over time of the packet latency across a network. The consequences of jitter, often called jittering, are a voice communication with gaps in it or stirring metal voice effect. Mostly on a GPRS and EDGE network (and in general in a mobile network environment), the jitter is a sensible problem to face. To cope with jittering issues, a jitter buffer produces a smooth and regular audio output, just adding some more latency.
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The jitter buffer is an elastic is an elastic buffer in which the signal is temporarily stored and then retransmitted re-transmitted at a rate based on the average rate of the incoming signal. Checking the Enable checkbox you allow
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The Force option obliges
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MaxSize is the max length of the jitterbuffer in milliseconds.
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The procedures involving keepalive use three user-driven variables:
- time
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- : the interval between the last data packet sent (simple ACKs are not considered data) and the first keepalive probe; after the connection is marked to need keepalive, this counter is not used any further
- interval
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- : the interval between subsequential keepalive probes, regardless of what the connection has exchanged in the meantime
- probes
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- : the number of unacknowledged probes to send before considering the connection dead and notifying the application layer
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