www.greatel.net
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Step 9: IP Packet in Tos Field is used to set the quality assurance for the different classes of service.
Step10: In the T.38 field select on or off to indicate whether to invoke T.38 fax function or not. on means to invoke;
off means not to invoke.
Step11: In the T.38 Data Frame Length field set the packing interval for each T.38 data frame. The value can be
set as the fallowing: 10/20/30/40/50/60.
Step12: In the T.38 Redundancy Frame Numbers field set the number of the T.38 data frame in each T.38 data
packet (the effective range is 1 to 6).
Step13: In the T.38 Change to UDP Port field select yes or no to indicate if the gateway will change the UDP port
when switching to T.38 mode. If set to no it will use the RTP port established during the connection.
Step14: In the T.38 Error detect Mode select on or off to indicate to invoke T.38 error detect mode or not. on
means to invoke T.38 error detect mode; off means not to invoke T.38 error detect mode.
5.7.8 Advanced SIP Options
Step 1: Click the Advanced Config link on the left side of Figure 5-1. Then click SIP Config. The SIP Optional
screen displays:
Figure 5-7h