SRV lookup Prefix for TCP
Description Specifies a prefix to add to the domain name when performing a DNS
SRV lookup using TCP.
Note
• This setting is available only when [Enable DNS SRV
lookup] is set to [Yes].
Value Range Max. 32 characters
Default Value _sip._tcp.
Configuration File Reference SIP_TCP_SRV_PREFIX_n (Page 247)
4.5.2.8 Transport Protocol of SIP
Transport Protocol
Description Selects which transport layer protocol to use for sending SIP packets.
Value Range
• UDP
• TCP
Default Value UDP
Configuration File Reference SIP_TRANSPORT_n (Page 254)
4.5.2.9 Timer Settings
T1 Timer
Description Selects the default interval, in milliseconds, between transmissions of
SIP messages. For details, refer to RFC 3261.
Value Range
• 250
• 500
• 1000
• 2000
• 4000
Default Value 500
Configuration File Reference SIP_TIMER_T1_n (Page 244)
T2 Timer
Description Selects the maximum interval, in seconds, between transmissions of
SIP messages. For details, refer to RFC 3261.
108 Administrator Guide Document Version 2012-02
4.5.2 SIP Settings [Line 1]–[Line x]