In this section:
The SBC Core supports Stream Control Transmission Protocol (SCTP) as a transport for SIP. SCTP is an IETF transport-layer protocol which provides several enhancements over the Transport Control Protocol (TCP), including:
If the SCTP profile is not configured, then it will take the default SCTP profile. If the SCTP profile needs to be modified when associated with SIP signaling port, the port should be disabled for modification to take effect.
Multi-homing and IPv6 feature for SCTP are not supported in this release.
On the SBC main screen, go to Configuration > Profile Management > Category: Signaling Profiles > SCTP Profile.
The SCTP Profile window opens.
Figure 1: Signaling Profiles - Sctp Profile
To Edit the SCTP Profile
To edit any of the SCTP Profile in the list, click the radio button next to the specific SCTP Profile name.
The Edit Selected SCTP Profile window is displayed below.
Figure 2: Signaling Profiles - Sctp Profile Edit Window
Make the required changes and click Save at the right hand bottom of the panel to save the changes made.
To create a new SCTP Profile, click New SCTP Profile tab on the SCTP Profile List panel.
Figure 3: Signaling Profiles - Sctp Profile Fields
The Create New SCTP Profile window is displayed.
Figure 4: Signaling Profiles - Sctp Profile Create Window
The following fields are displayed:
Table 1: Sctp Profile Parameters
Parameter |
|
---|---|
| Specifies the name of the SCTP Profile. |
| Specifies the number of Outbound Streams for this SCTP Profile. The values range from 1 to 32. |
| Specifies the number of Inbound Streams for this SCTP Profile. The value range from |
| Specifies the number of Peer Transport Addresses for this SCTP Profile. The allowed values for this field are 1 or 2. |
| Specifies the number of Retransmission per path for this SCTP Profile. The value range from 1 to 10. |
| Specifies the SCTP Heartbeat Interval in seconds. The value range from 1 to 6. |
| Specifies whether to enable the Ordered Delivery option for this SCTP profile or not. The options are:
|
| Specifies whether to enable the Sack Delay option for this SCTP Profile or not. The options are:
|
| Specifies the maximum number of re-transmissions per SCTP Association. The value range from 0 to 20. |
| Specifies the SCTP RTO initial in milliseconds. The value range from 50 to 500. |
| Specifies the SCTP RTO Minimum interval in milli seconds. The value range from 10 to 5000. |
| Specifies the SCTP RTO Maximum interval in milli seconds. The value range from 10 to 5000. |
| Specifies the maximum SCTP maximum Init Retry in milli seconds. The value range from 1 to 10. |
| Specifies the SCTP Path MTU in bytes. The value range from 1000 to 1500. |
| Specifies the SCTP Idle Timeout interval in seconds. The value range from 0 to 86400. |
To Copy SCTP Profile
To copy any of the created SCTP Profile and to make any minor changes, click the radio button next to the specific SCTP Profile to highlight the row.
Click Copy SCTP Profile tab on the SCTP Profile List panel.
Figure 5: Signaling Profiles - Sctp Profile Fields
The Copy Selected SCTP Profile window is displayed along with the field details which can be edited.
Figure 6: Signaling Profiles - Sctp Profile Copy Window
Make the required changes to the required fields and click Save to save the changes. The copied SCTP Profile is displayed at the bottom of the original SCTP Profile in the SCTP Profile List panel.
To delete any of the created SCTP Profile, click the radio button next to the specific SCTP Profile which you want to delete.
Click Delete at the end of the highlighted row. A delete confirmation message appears seeking your decision.
Click OK to remove the specific SCTP Profile from the list.