Huawei eSpace 6805 Administrator's Manual page 140

eSpace 6805 IP Phone
Administrator Guide
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Issue 01 (2014-01-06)
Figure 6-58 Data link layer of the SIP protocol
Network layer
The third layer in the protocol layer description window is the network layer, which
contains the source IP address (Source), destination IP address (Destination), packet
length (Total length), and checksum (Header checksum), as shown in
Figure 6-59 Network layer of the SIP protocol
At the network layer, check whether:
The source IP address and destination address are correct.
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− The length of a packet exceeds the maximum length allowed by a certain device.
Transport control layer
The fourth layer in the protocol layer description window is the transport control layer,
which contains Source port, Destination port, packet length (Length), and Checksum,
as shown in Figure 6-60.
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6 Appendix
Figure 6-59.
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