Use this window to configure the Packet Service Profile for the Condition In Addition To No Common Codec feature. On the SBC main screen, go to Configuration > Profile Management > Category: Media Profiles > Packet Service Profile > Condition In Addition To No Common Codec. Select the desired Packet Service Profile from the drop-down list to view its respective Condition In Addition To No Common Codec parameters. The Condition In Addition To No Common Codec window is displayed. Profile Management - Media Profiles - Condition In Addition To No Common Codec Conditions in Addition to No Common Codec Parameters: When selected, and this packet service profile is applied to either ingress or egress call leg, the Condition In Addition To No Common Codec offer list of the remote peer is given preference. This option is available only when Transcode=Conditional. Currently, SBC controls honoring the codec preference of the offerer using Honor Offer Preference (HOP) flag only in PSP Object using the PSX provided Honor Remote Preference (HRP) flag is enabled. The answerer codec preference is now controlled as part of this feature using the Honor Answer Preference (HAP) flag available in PSP Object using the PSX. SBC supports the following behavior based on the PSX flag selection of these flags. Note that these flags are leg independent, that is, it can be enabled on any associated PSP to take effect. When HOP flag is enabled and HAP flag is disabled: This is the current behavior of SBC. It selects a codec order of precedence in the offered SDP, irrespective of whether it is a pass-thru or a transcoded codec (provided transcoding is defined for that codec). SBC as part of media lockdown may send a re-INVITE to egress peer. Note that the preference on the answerer side is given to a pass-through codec. When both HOP and HAP flags are enabled: SBC gives preference to HAP over HOP in case of conflict. The Honor Remote Preference (HRP) flag on the answerer leg decides the preference order. Based on that preference list, SBC selects a codec with highest preference from answer SDP that can be used even if it requires transcoding. Note that this may cause the selection of a codec on the other side leg not to be honored. This happens in case of a passthrough call. When HAP flag is enabled and HOP is disabled: SBC gives preference to answerer codec order that is created based on HRP flag. The most preferred codec is chosen as received in the answer SDP, irrespective of whether it is a pass-thru or a transcoded codec (provided transcoding is defined for that codec). When you select Only or Determined By PSP For Other Leg in the Transcode section, SBC disables the check boxes in this section. Make the required changes and click Save.To View and Edit Condition In Addition To No Common Codec
Parameter Description Apply Fax Tone Treatment This flag is the same as applyFaxToneTreatment flag in PSP in an external PSX configuration. It is being used to apply FaxToneTreatmentconfiguration while transitioning to a fax call.Different DTMF Relay When selected, the SBC performs transcoding when the ingress and egress call legs use different DTMF relay methods. When cleared, SBC transcoding is not determined by different DTMF relay methods.Different Packet Size When selected, the SBC performs transcoding when the ingress and egress call legs use different packet sizes. When cleared, SBC transcoding is not determined by different packet sizes. Different Silence Suppression When selected, the SBC performs transcoding when the ingress and egress call legs use different silence suppression methods. When cleared, SBC transcoding is not determined by different silence suppression methods. Honor Offer Preference Honor Answer Preference Different2833Payload Type When selected, SBC allows to transcode media when RFC2833 payload type received from ingress differs from the preferred DTMF payload type configured in egress PSP.
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