Welltech SIPPBX 6200 V.3.1.0 - Manual (Page 68)

Welltech Computer Co., Ltd.
SIPPBX 6200S/GS Release 3.1.0 User Guide - 68 -
codec selection
• DTMF Relay: DTMF transport type selection
• Send 100: Enable to send SIP 100 Trying when AA/VMS receive a call
• Send 180 or 183: Enable to send SIP 180 or 183 when AA/VMS receive a
call
• RFC 2833 Select Order:
- Local RFC2833 Order: Use local RFC2833 payload type priority to
match
- Remote RFC2833 Order: Use received RFC2833 payload type priority
to match
• RFC 2833 Payload Type Priority 1: 96 or 101. It is recommended to use
101 and then 96.
• RFC 2833 Payload Type Priority 2: 96 or 101
Advance:
Figure 6.3-2
Parameter Description:
• UDP Port: The local UDP port on which the SIP service listened
• Retransmission T1 (ms): T1 determines several timers as defined in
RFC3261. For example, when an unreliable transport protocol is used, a
Client Invite transaction retransmits requests at an interval that start at T1
seconds and doubles after every retransmission. A Client General
transaction retransmits requests at an interval that starts at T1 and doubles