K.5 Applicable T.38 SDP attributes at the Mn Interface

29.1633GPPInterworking between the IP Multimedia (IM) Core Network (CN) subsystem and Circuit Switched (CS) networksTS

This clause lists T.38 related SDP attributes that can be signalled towards the IM-MGW as part of the codec information within the "Local IMS Resources" and "Remote IMS Resources" parameters within the "Reserve IMS connection point", "Configure IMS resources" and "Reserve IMS Connection point and configure remote resources" procedures described in clause 9.

Table K.5.1: Applicable T.38 SDP attributes at the Mn Interface

Attribute

Remarks

T38FaxVersion

T.38 SDP attributes shall only be provisioned for Version 2 or higher. Version 0 applies if attribute is omitted.

T38MaxBitRate

T38FaxMaxBuffer

T38FaxMaxDatagram

T38FaxMaxIFP

Only if T.38 version 4 is supported by the IM-MGW

T38FaxUdpEC

T38FaxUdpECDepth

Only if T.38 version 4 is supported by the IM-MGW

T38FaxUdpFECMaxSpan

Only if T.38 version 4 is supported by the IM-MGW

T38ModemType

Only if T.38 version 4 is supported by the IM-MGW

Annex L (normative):
Interworking of called IN number and original called IN number parameters