One of the issues that SAP Mobile Services has experienced is about non-standard realms. The customer in of the deployments did not wish to use the 3GPP standard realm format, instead wanting to use a ‘local’ realm between us and customer. We updated the relevant AVPs so that the realm was standardised for all attached customers, thus “hiding” the “local realm” that the customer wished to use.
Ashruti Singh Senior Product Marketing Manager- SAP Mobile Services
MNO wishing to use IMSI based routing, rather than realm based routing
an MNO not wishing to change some AVP values within some of the S6a interface commands.
an MNO using shortnames instead of the 3GPP standard for MME hostnames.
In each of the cases we have been able to extend the functionality of the Diameter HUB or outsourced DEA to resolve these issues, in some cases permanently, and in others temporarily to allow end to end roaming testing to take place, while the MNOs engaged with their suppliers to deliver a more permanent solution.