Enabling the transmission of QSIG signaling over a SIP network
With the SIP for telephones (SIP-T) protocol, the ISDN signaling messages can be tunneled through the SIP messages. The device only supports encapsulating QSIG messages within SIP messages. For more information about the SIP-T protocol, see "Configuring SIP."
To configure the SIP tunneling function:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter E1/T1 interface view. | controller { e1 | t1 } slot-number | N/A |
3. Bundle timeslots into a PRI group. | pri-set [ timeslot-list range ] | N/A |
4. Exit E1/T1 interface view. | quit | N/A |
5. Enter the view of the serial interface created for the PRI group. | interface serial number: { 15 | 23 } | N/A |
6. Enable QSIG signaling. | isdn protocol-type qsig | By default, DSS1 signaling is enabled. |
7. Exit E1/T1 interface view. | quit | N/A |
8. Enter the view of the voice subscriber line of the PRI group. | subscriber-line number: { 15 | 23 } | N/A |
9. Enable the QSIG tunneling function. | qsig-tunnel enable | Disabled by default. |
![[NOTE: ]](images/note.png) | NOTE: To enable the QSIG tunneling function, you must also execute the qsig-tunnel enable command on the voice trunks of both the ingress and egress gateways. When the QSIG tunneling function is enabled, the system will not process or send non-QSIG ISDN calls. The overlap mode ISDN calls do not support QSIG tunnel function. | |