SRVCC
E523048
SRVCC (Single Radio Voice Call Continuity) is a mobile network feature that enables seamless handover of ongoing voice calls from LTE or VoLTE to legacy circuit-switched networks like 2G or 3G.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Single Radio Voice Call Continuity | 2 |
| SRVCC canonical | 1 |
| SRVCC-capable MME | 1 |
| SRVCC-capable eNodeB | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5480080 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: SRVCC Context triple: [CSFB (Circuit Switched Fallback), alternativeTo, SRVCC]
-
A.
VoLTE
VoLTE (Voice over LTE) is a technology that enables high-quality voice calls to be transmitted as data over 4G LTE networks instead of traditional circuit-switched voice channels.
-
B.
CSFB (Circuit Switched Fallback)
CSFB (Circuit Switched Fallback) is a mobile network feature that allows LTE devices to temporarily switch to a legacy 2G/3G circuit-switched network to handle voice calls and SMS.
-
C.
VoIP
VoIP (Voice over Internet Protocol) is a technology that enables voice communications and multimedia sessions to be delivered over Internet Protocol (IP) networks instead of traditional telephone lines.
-
D.
SIP
SIP is the IATA airport code for Simferopol International Airport, the main air gateway to the Crimean Peninsula.
-
E.
MGCF
MGCF (Media Gateway Control Function) is a core network element in IP Multimedia Subsystem (IMS) architectures that controls media gateways and manages signaling between IP-based and traditional circuit-switched telephony networks.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: SRVCC Target entity description: SRVCC (Single Radio Voice Call Continuity) is a mobile network feature that enables seamless handover of ongoing voice calls from LTE or VoLTE to legacy circuit-switched networks like 2G or 3G.
-
A.
VoLTE
VoLTE (Voice over LTE) is a technology that enables high-quality voice calls to be transmitted as data over 4G LTE networks instead of traditional circuit-switched voice channels.
-
B.
CSFB (Circuit Switched Fallback)
CSFB (Circuit Switched Fallback) is a mobile network feature that allows LTE devices to temporarily switch to a legacy 2G/3G circuit-switched network to handle voice calls and SMS.
-
C.
VoIP
VoIP (Voice over Internet Protocol) is a technology that enables voice communications and multimedia sessions to be delivered over Internet Protocol (IP) networks instead of traditional telephone lines.
-
D.
SIP
SIP is the IATA airport code for Simferopol International Airport, the main air gateway to the Crimean Peninsula.
-
E.
MGCF
MGCF (Media Gateway Control Function) is a core network element in IP Multimedia Subsystem (IMS) architectures that controls media gateways and manages signaling between IP-based and traditional circuit-switched telephony networks.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
mobile network feature
ⓘ
voice call continuity mechanism ⓘ |
| abbreviationOf |
Single Radio Voice Call Continuity
ⓘ
linked to:
SRVCC
|
| appliesTo |
LTE networks with legacy 2G/3G coverage
ⓘ
mobile networks ⓘ |
| benefit |
maintains service continuity for VoLTE calls
ⓘ
prevents voice call drop during LTE to 2G/3G handover ⓘ |
| category |
handover procedure
ⓘ
voice service continuity ⓘ |
| contrastsWith | Dual Radio Voice Call Continuity ⓘ |
| definedIn | 3GPP IMS and LTE specifications ⓘ |
| dependsOn | coverage of legacy 2G or 3G networks ⓘ |
| designedFor | LTE to legacy CS network interworking ⓘ |
| enables | seamless handover of ongoing voice calls ⓘ |
| ensures | continuity of emergency calls across LTE and CS networks ⓘ |
| fullName |
Single Radio Voice Call Continuity
ⓘ
linked to:
SRVCC
|
| goal | ensure uninterrupted voice service across radio technologies ⓘ |
| involves |
coordination between LTE and CS core networks
ⓘ
handover of media and signaling ⓘ |
| objective | smooth migration from legacy CS voice to VoLTE ⓘ |
| operatesWith | single active radio interface in the UE ⓘ |
| primaryUseCase | voice call continuity during radio access change ⓘ |
| relatedConcept |
IMS Centralized Services
ⓘ
linked to:
IMS core network
Voice Call Continuity ⓘ |
| relatedTo |
CSFB
ⓘ
linked to:
CSFB (Circuit Switched Fallback)
VoLTE ⓘ |
| requires |
IMS core network
ⓘ
SRVCC-capable MME ⓘ
linked to:
SRVCC
SRVCC-capable MSC server ⓘ SRVCC-capable eNodeB ⓘ
linked to:
SRVCC
|
| requiresSupportIn |
core network
ⓘ
radio access network ⓘ user equipment ⓘ |
| sourceDomain | packet-switched domain ⓘ |
| standardizedBy | 3GPP ⓘ |
| supportsHandoverFrom |
LTE
ⓘ
VoLTE ⓘ |
| supportsHandoverTo |
2G circuit-switched network
ⓘ
3G circuit-switched network ⓘ |
| supportsService |
circuit-switched voice
ⓘ
supplementary voice services ⓘ |
| targetDomain | circuit-switched domain ⓘ |
| triggeredWhen | LTE coverage degrades during an ongoing voice call ⓘ |
| usedBy | mobile network operators deploying VoLTE ⓘ |
| uses | single radio transceiver in the UE ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: SRVCC Description of subject: SRVCC (Single Radio Voice Call Continuity) is a mobile network feature that enables seamless handover of ongoing voice calls from LTE or VoLTE to legacy circuit-switched networks like 2G or 3G.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: SRVCC