You must administer the H.323 IP trunks, equipped with QSIG signaling, between nodes. These trunks are the signaling portion of SBS calls and are specifically translated as SBS trunks in their trunk group and signaling group administration forms. The number of SBS trunk group members must be engineered for the expected SBS traffic volume.
You must administer the trunks to the local PSTN from each node. These trunks do not have any unique SBS related administration.
Note:
While these trunks are intended to be circuit switched PSTN trunks, there is nothing in the SBS feature operation that precludes the use of other trunks. For example, a second choice for bearer calls may be IP trunks. Voice quality might be affected if you use trunks other than PSTN quality circuit switched trunks.
SBS trunk groups are added in three steps. First, create the trunk group and populate the first two administration screens. Second, create the SBS signaling group. Third, add the trunk members to the SBS trunk group. All of these tasks are performed in a SAT session.
