Parameter Mapping - SS7 ISUP to SIP

Overview:

Below are tables displaying the SS7 ISUP Parameters and their corresponding SIP Signaling Parameter.

 

Note: Standard mapping is done based on RFC 3398 and Q.1912.5.

Note: Some of the mapping below occurs automatically and some require some configuration changes to occur.

 

 

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

 

Call Forwarding

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

 

LNP

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

 

 

SS7 ISUP (ANSi)   - 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

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

 

 

Call Forwarding

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

APRI in Generic Name Parameter

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