Subscription-Id AVP携带了用户的身份信息。在Gx接口中,该AVP通常携带的是用户的MSISDN号码即手机号。在RFC4006中关于该AVP的原文定义如下: “The Subscription-Id AVP (AVP Code 443) is used to identify the end user's subscription and is of type Grouped. The Subscription-Id AVP includes a Subscription-Id-Data AVP that holds the identifier and a Subscription-Id-Type AVP that defines the identifier type. It is defined as follows (per the grouped-avp-def of RFC 3588 [DIAMBASE]): Subscription-Id ::= < AVP Header: 443 >
{ Subscription-Id-Type }
{ Subscription-Id-Data }” 该AVP由两部分组成,Subscription-Id-Type以及Subscription-Id-Data。Type里面指明了用户身份信息的类型,如果取值为END_USER_E164时,则后续Subscription-Id-Data部分携带的是用户的手机号码。 参见一个实际报文的该AVP截图。
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