1. A method for enhanced indication of network support of Voice -over-IMS for an User
Equipment (UE) in an Evolved Packet System EPS network, said method comprising
taking into account support of SRVCC and/or Voice-over-IMS by Radio Access Network
RAN nodes,
said method comprising:
- an eNodeB (eNB) serving said UE signalling to a Mobility Management Entity (MME) serving said UE, information as to said Voice-over-IMS and/or SRVCC support by RAN nodes, referred to as Radio Access Network RAN-level-support information,
- said MME sending to said UE, in an Attach, or Tracking Area Update TAU, Accept message, a Voice-over-IMS support indication, indicating Voice-over-IMS supported or Voice-over-IMS not supported, taking into account said RAN-level support information received from said eNodeB.
2. The method as claimed in claim 1, comprising a step of:
- said eNodeB signalling said RAN-level-support information to said MME during
an Attach procedure or a mobility management procedure for said UE.
3. The method as claimed in claim 1 or 2, comprising a step of:
- said eNodeB signalling said RAN-level support information to said MME, in a
dedicated message.
4. The method as claimed in any of claims 1 to 3, comprising a step of:
- said eNodeB determining information as to said Voice-over-IMS and/or SRVCC
support by RAN nodes, referred to as Radio Access Network RAN-level-support
information, using information as to radio capabilities of said UE, and/or RAN
configuration information.
5. The method as claimed in claim 4, comprising a step of:
- said MME signalling said information as to radio capabilities of said UE to said
eNodeB, during an Attach procedure or a mobility management procedure for said UE.

6. The method as claimed in claim 5, comprising a step of:
- said MME signalling said information as to radio capabilities of said UE to said
eNodeB in a dedicated message.
7. The method as claimed in any of claims 1 to 6, comprising a step of:
- said MME triggering a procedure whereby the UE radio capabilities are first
sent to the eNodeB in a downlink SI message, and then the eNodeB responds with said
RAN-level-support information sent to said MME.
8. An eNodeB (eNB), comprising
- means for signalling to a Mobility Management Entity (MME) serving a User
Equipment (UE) served by said eNodeB in an Evolved Packet System (EPS) network,
information as to Voice-over-IMS and/or SRVCC support by Radio Access Network
(RAN) nodes, referred to as Radio Access Network RAN-level-support information, said
signaling allowing a Voice-over-IMS indication indicating Voice-over-IMS supported or
Voice-over-IMS not supported sent by said MME to said UE in an Attach, or Tracking
Area Update (TAU), Accept message, to take said RAN-level-support information into
account.
9. The eNodeB as claimed in claim 8, comprising:
- means for signaling said RAN-level-support information to said MME during an
Attach procedure or a mobility management procedure for said UE.
10. The eNodeB as claimed in claim 8 or 9, comprising:
- means for signaling said RAN-level support information to said MME, in a
dedicated message.
11. The eNodeB as claimed in any of claims 8 to 10, comprising:
- means for determining said RAN-level-support information, using information
as to radio capabilities of said UE, and/or RAN configuration information.
12. The eNodeB as claimed in claim 11, comprising:

-means ror receiving information as to radio capabilities or said Uh, signaled to said eNodeB by said MME.
13. The eNodeB as claimed in claim 11 or 12, comprising:
- means for receiving information as to radio capabilities of said UE signaled to
said eNodeB by said MME during an Attach procedure or a mobility management
procedure for said UE.
14. The eNodeB as claimed in any of claims 11 to 13, comprising:
- means for receiving information as to radio capabilities of said UE signaled to
said eNodeB by said MME in a dedicated message.
15. The eNodeB as claimed in any of claims 8 to 14, comprising:
- means for, during a procedure triggered by said MME, first receiving UE radio
capabilities in a downlink SI message, and then responding with said RAN-level-
support information sent to said MME.
16. A Mobility Management Entity (MME), comprising:
- means for receiving from an eNodeB (eNB) serving a User Equipment (UE) served by said MME in an Evolved Packet System (EPS) network, information as to Voice-over-IMS and/or SRVCC support by Radio Access Network RAN nodes, referred to as Radio Access Network RAN-level-support information,
- means for sending to said UE, in an Attach, or Tracking Area Update (TAU), Accept message, a Voice-over-IMS support indication, indicating Voice-over-IMS supported or Voice-over-IMS not supported, taking into account said RAN-level support information.
17. The Mobility Management Entity (MME) as claimed in claim 16, comprising:
- means for receiving said RAN-level-support information during an Attach
procedure or a mobility management procedure for said UE.
18. The Mobility Management Entity (MME) as claimed in claim 16 or 17,
comprising:

- means for receiving said RAN-level support information, in a dedicated
message.
19. The Mobility Management Entity (MME) as claimed in any of claims 16 to 18,
comprising:
- means for signalling information as to radio capabilities of said UE to said
eNodeB, during an Attach procedure or a mobility management procedure for said UE.
20. The Mobility Management Entity (MME) as claimed in claim 19, comprising:
-means for signalling said information as to radio capabilities of said UE to said
eNodeB in a dedicated message.
21. The Mobility Management Entity (MME) as claimed in any of claims 16 to 20,
comprising:
- means for triggering a procedure whereby UE radio capabilities are first sent to
the eNodeB in a downlink SI message, and then the MME receives said RAN-level-
support information from said eNodeB.