SBC session border controllers 61
SBC Configuration –> SIP Users –> "Add" or "Edit"
User direction parameters
– Name — an arbitrary name for identification, convenient for the operator;
– SIP transport — transport to be used to receive calls to and from the destination;
– Transport protocol — selection of the transport layer protocol used to receive and transmit SIP messages:
– TCP-prefer — reception via UDP and TCP. Transmission via TCP. If connection is not established via
TCP, the transmission will be performed via UDP;
– UDP-prefer — reception via UDP and TCP. Sending packets over 1300 bytes via TCP, under 1300 bytes
via UDP;
– UDP-only — use only UDP protocol;
– TCP-only — use only ТСP protocol;
– SIP header format — defines the format for SIP headers transmission:
– full — use a normal (long) header format;
– compact — use a short header format;
– RADIUS profile — RADIUS profile for incoming calls authentication and authorization (more information in
section 4.1.9);
– Preserve Contact header value — when using this option, SBC does not substitute the 'contact' field in
requests sent to the softswitch;
– RTP packet timeout— voice frequency path status control function that monitors the presence of RTP traffic
from the communicating device. The range of available values is from 10 to 300 seconds. When flag is
unchecked, RTP control is disabled, otherwise enabled. If there are no RTP packets coming from the
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