Emergency Services Handling
Patent No. EP3797535 (titled "Emergency Services Handling") was filed by Blackberry on Dec 19, 2019. The application was issued on Oct 6, 2021.
Patent Summary
Enabling emergency calls on dual-registered cellphones in multi-network environments when the primary network doesn't support emergency services. The technique involves detecting an emergency indication and initiating the call over a different access network that connects to a core network enabling fallback to a network supporting emergency services. The cellphone determines if emergency services are supported during registration and selects the appropriate network. However, if emergency services aren't supported on the primary network, it falls back to a network that does. This avoids failures when trying to make emergency calls over networks that don't support them.
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EP3797535
- Application Number
- EP19842486A
- Filing Date
- Dec 19, 2019
- Status
- No Opposition Filed Within Time Limit
- Aug 12, 2022
- Publication Date
- Oct 6, 2021
- External Links
- Slate, Register , Google Patents