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/Q1: Background：The customer is using E1 gateway + SINA + phone and report that phone can only call out but not call in. Use signaling call test for number transformation, and it does not work.

Q1: Background：The customer is using E1 gateway + SINA + phone and report that phone can only call out but not call in. Use signaling call test for number transformation, and it does not work.

Oct 11, 2023

1.Check whether the inbound routing configured correctly.

2.Check the sip server port of E1 voice gateway used for connecting with SINA.

3.check whether there is a dot after number prefix, such as “4.” , if there is, please remove the dot, “4” is ok.

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