[SIPForum-discussion] How SIP call can be diffrentiated based on Class4 and Class5 switch calls

[Kshitij Bhushan]

Hi All,

One basic question?

How we are distinguishing the class4 and class5 switch call in SIP?Is
through NOA or some access layer or something else.

Pls reply!!!!

Thanks in advance.
Kshitij.
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