Parameter Mapping
- Kelli Higdon
Â
Below are tables displaying the SS7 ISUP Parameters and their corresponding SIP Signaling Parameter.
Standard mapping is done based on RFC 3398 and Q.1912.5. Some of the mapping occurs automatically and some require configuration changes to occur.
Â
SS7 ISUP (ITU) to SIP Parameter Mapping
Area | SS7 Optional Parameter / Message | SIP Header / Parameter |
|---|---|---|
Caller Information | Calling Party Number | From Header |
Calling Party's Category | CPC Parameter in From Header | |
Call Hold | Suspend Message | Re-Invite message with IP address of 0.0.0.0 |
Resume Message | Re-Invite message with IP address of 0.0.0.0 | |
Equal Access | Transit Network Selection | CIC parameter in R-URI |
  | Original Called Number | Diversion header |
Redirection Information | Diversion header | |
Redirecting Number | Diversion header | |
Privacy | APRI in Calling Party Number | Privacy parameter in RP-ID header & P-Asserted-ID header |
  | Generic Number | rn parameter in R-URI (in case of ported number) |
Called Ported Address | R-URI (in case of ported number) | |
Bit M Forward Call Indicator | NPDI | |
Release | Cause Indicator | SIP Reason header |
Â
SS7 ISUP (ANSi) to SIP Parameter Mapping
Area | SS7 Optional Parameter / Message | SIP Header / Parameter |
|---|---|---|
  | Calling Party Number | From header |
Calling Party's Category | CPC parameter in From header | |
Originating Line Information | ISUP_OLI parameter | |
Generic Name | Display portion of the From, RP-ID, and P-Asserted-ID headers | |
Call Hold | Suspend Message | Re-Invite Message with IP address of 0.0.0.0 |
Resume Message | Re-Invite Message with actual IP address | |
Equal Access | Carrier Identification | CIC parameter in R-URI |
Carrier Selection Identification | DAI parameter in R-URI | |
  | Original Called Number | Diversion header |
Redirection Information | Diversion header | |
Redirecting Number | Diversion header | |
Charge Number | Diversion Header -or- P-Charge Info Header depending on whether P-Charge Info is enabled in SIP Headers object. | |
Privacy | APRI in Calling Party Number and | Privacy parameter in RP-ID header & P-Asserted-ID header |
LNP | Generic Address | R-URI (in case of ported number) |
Called Ported Address | rn parameter in R-URI (in case of ported number) | |
Release | Cause Indicator | SIP Reason header |
Â
Â