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Global Call IP Technology Guide — November 2007 113
Dialogic Corporation
IP-Specific Operations
Selected Requests UDP
Transport Parameter Combinations with Proxy
All Requests UDP via Proxy
Requests are sent UDP to the proxy, and the proxy sends the request onward using UDP (unless the
proxy resolves the destination as being TCP, based on DNS information).
All Requests TCP via Proxy
Requests are sent TCP to the proxy, and the proxy sends the request onward using TCP.
Parameter Value
E_SIP_tcpenabled ENUM_Enabled
E_SIP_OutboundProxyTransport not set
E_SIP_Persistence ENUM_PERSISTENCE_TRANSACT_USER (default)
SIP_maxUDPmsgLen not set
E_SIP_DefaultTransport ENUM_TCP
outbound_proxy_* fields IP and hostname both not set
sip_msginfo_mask includes IP_SIP_MSGINFO_ENABLE
transport parameter in Request-URI set to “;transport=udp” on selected requests
Parameter Value
E_SIP_tcpenabled ENUM_Disabled (default)
E_SIP_OutboundProxyTransport not set
E_SIP_Persistence not set
SIP_maxUDPmsgLen not set
E_SIP_DefaultTransport not set
outbound_proxy_* fields IP -or- hostname set
sip_msginfo_mask any value
transport parameter in Request-URI not set
Parameter Value
E_SIP_tcpenabled ENUM_Enabled
E_SIP_OutboundProxyTransport ENUM_TCP
E_SIP_Persistence ENUM_PERSISTENCE_TRANSACT_USER (default)
SIP_maxUDPmsgLen default (not set)
E_SIP_DefaultTransport not set
outbound_proxy_ fields IP -or- hostname set
sip_msginfo_mask any value
transport parameter in Request-URI not set