HSS发送的SAA消息不符合协议导致VOLTE用户注册失败

【问题描述】
华为个别VOLTE用户注册过程中,华为SCSCF给终端侧回复500 Server Internal Error导致终端注册失败。
【原因定位】
经分析华为SCSCF的消息,发现注册过程中,华为SCSCF与中兴HSS的Cx接口交互中,中兴HSS下发的SAA消息中携带的CCF地址信息格式不符合协议,导致华为CSCF报错、用户注册失败。中兴HSS消息如下:

而根据协议要求,这种CCF地址信息格式正常情况下,必须是aaa://开头的,类似于:
primaryChargingCollectionFunctionName:aaa://ccf1.ims.chinaunicom.cn
协议依据:
根据注册相关协议规定, CCF地址信息填写格式为DiameterURI, 必须以“aaa://”或“aaas://”开头,用于指示一个URI。
(1)3GPP29.229-c30 协议
CCF 地址信息填写格式为 DiameterURI:
6.3.19 Charging-Information A VP
The Charging-Information is of type Grouped, and contains the addresses of the charging functions.
A VP format
Charging-Information :: = < A VP Header :618 10415 >
[ Primary-Event-Charging-Function-Name ]
[ Secondary-Event-Charging-Function-Name ]
[ Primary-Charging-Collection-Function-Name ]
[ Secondary-Charging-Collection-Function-Name ]
*[ AVP]
6.3.20 Primary-Event-Charging-Function-Name AVP
The Primary-Event-Charging-Function-Name AVP is of type DiameterURI. This AVP contains the address of the Primary Online Charging Function. The receiving network element shall extract the FQDN of the DiameterURI in this AVP and may use it as content of the Destination-Host A VP for
the Diameter accounting requests. The parent domain of the FQDN in the DiameterURI shall be used as Destination-Realm. The number of labels used for the Destination-Realm shall be determinedbefore the Charging Information is provisioned and maybe a configuration option.
NOTE: A FQDN is an absolute domain name including a subdomain and its parent domain. The subdomain and the parentdomain containone or more labels separatedby dots.
6.3.21 Secondary-Event-Charging-Function-Name AVP
The Secondary-Event-Charging-Function-Name AVP is of type DiameterURI. This AVP contains the address of the Secondary Online Charging Function. The Destination-Host and Destination-Realm values for the Diameter accounting requests should be extracted from the DiameterURI in the way indicated in clause6.3.20.

6.3.22 Primary-Charging-Collection-Function-Name AVP
The Primary-Charging-Collection-Function-Name AVP is of type DiameterURI. This AVP contains the address of the Primary Charging Data Function. The Destination-Host and Destination-Realm values for the Diameter accounting requests should be extracted from the DiameterURI in the way indicated in clause6.3.20.
6.3.23 Secondary-Charging-Collection-Function-Name AVP
The Secondary-Charging-Collection-Function-Name AVP is of type DiameterURI. This AVP contains the address of the Secondary Charging Data Function. The Destination-Host and Destination-Realm for the Diameter accounting requests values should be extracted from the DiameterURI in the way indicated in clause6.3.20.
(2)IETF rfc3588(Diameter Based Protocol)协议
DiameterURI 必须以“aaa://”开头,用于指示一个URI:DiameterURI
The DiameterURI MUST follow the Uniform Resource Identifiers (URI) syntax [URI] rules specifiedbelow:
“aaa://” FQDN [ port ] [ transport ] [ protocol ] ; No transport security
“aaas://” FQDN [ port ] [ transport ] [ protocol ] ; Transport security used
经过与中兴 HSS 侧工程师沟通,对端 HSS 调整后问题解决。
影响范围:华为部分 VOLTE 用户无规律的注册失败。
【解决方案】
中兴 HSS 侧针对单用户调整数据后问题暂时解决。

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SIFC配置错误导致终端注册提示500错误

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SIFC配置错误导致终端注册提示500错误

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