Which range of UDP ports works when requesting a "Handover Request" from MSC/MGW to BSC?

3G / 2G
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1

Hello all!
Dear experts, can you tell me which range of UDP ports works when requesting a “Handover Request” from MSC/MGW to BSC? Is this range prescribed for MGW/MSC Huawei (BSC - Ericsson)? If so, where and how to check? Or is there a standard range of ports according to 3GPP?
Thanks in advance!

P.S.: an example from message:

    AoIP Transport Layer Address
        Element ID: 0x7c
        Length: 6
        Transport Layer Address (IPv4): xx.xxx.xx.xxx
        UDP Port: 15480