IR.94 is the definition of an IMS profile by listing a number of Evolved Universal Terrestrial Radio Access Network (E-UTRAN), Evolved Packet Core, IMS core and UE Features which are considered essential to launch interoperable IMS based conversational video services.
As per the specification, the service can be offered over LTE or HSPA radio or both.
How does it affect a non IR.94 phone with another VoIP phone with respect to below points from the specification? Yet to figure out.
1. The UE shall indicate the capability to handle video by including a “video” media feature tag in the Contact header of any 18x or 200 response to an INVITE request independent of if video media is part of the SDP answer or not.
==> Most of the INVITEs i have seen, does not include the video feature tag in the Contact header.
2. Video Codecs:
Below are the recommendations from 3GPP. What if these are not supported by the UE? respond back with 0 port for video media in SDP?
Support of ITU-T Recommendation H.264 Constrained Baseline Profile (CBP) Level 1.2 as
specified in 3GPP release 10 TS 26.114 section 5.2.2, is mandatory in the UE and the
entities in the IMS core network that terminate the user plane.
Support for H.265 (HEVC) Main Profile, Main Tier, Level 3.1 as specified in 3GPP release 12
TS 26.114 section 5.2.2 is recommended in the UE and the entities in the IMS core network
that terminate the user plane.
The support in the UE of ITU-T Recommendation H.263 Profile 0 Level 45 as specified in
3GPP release 8 TS 26.114, section 5.2.2, is not required
The pdf in the below reference is having precise information about the profile. A Good read when get some time!
references:
https://www.gsma.com/newsroom/wp-content/uploads//IR.94-v10.0.pdf
As per the specification, the service can be offered over LTE or HSPA radio or both.
How does it affect a non IR.94 phone with another VoIP phone with respect to below points from the specification? Yet to figure out.
1. The UE shall indicate the capability to handle video by including a “video” media feature tag in the Contact header of any 18x or 200 response to an INVITE request independent of if video media is part of the SDP answer or not.
==> Most of the INVITEs i have seen, does not include the video feature tag in the Contact header.
2. Video Codecs:
Below are the recommendations from 3GPP. What if these are not supported by the UE? respond back with 0 port for video media in SDP?
Support of ITU-T Recommendation H.264 Constrained Baseline Profile (CBP) Level 1.2 as
specified in 3GPP release 10 TS 26.114 section 5.2.2, is mandatory in the UE and the
entities in the IMS core network that terminate the user plane.
Support for H.265 (HEVC) Main Profile, Main Tier, Level 3.1 as specified in 3GPP release 12
TS 26.114 section 5.2.2 is recommended in the UE and the entities in the IMS core network
that terminate the user plane.
The support in the UE of ITU-T Recommendation H.263 Profile 0 Level 45 as specified in
3GPP release 8 TS 26.114, section 5.2.2, is not required
The pdf in the below reference is having precise information about the profile. A Good read when get some time!
references:
https://www.gsma.com/newsroom/wp-content/uploads//IR.94-v10.0.pdf
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