IMG 1010 - Local Number Portability (LNP)

Overview

This feature allows the IMG to route ported numbers for SIP and SS7.  

Compliance

The IMG complies with the following:

• RFC3398 Section 7.2.1.1 (INVITE to IAM procedures) for SIP to SS7 call scenarios.

• RFC3398 Section 8.2.1.1 (IAM to INVITE procedures) for SS7 to SIP call scenarios 

Example

A basic LNP scenario is shown below.

Subscriber A=508-4445555 is calling Subscriber B=508-8623606

Subscriber B has been ported and the LEC servicing B is LEC2 and its LRN=333-2233445

Open

The IMG does not perform the LNP.

Tags

This feature will add the support of 2 new tags in the R-URI:

• rn - This tag is used to convey the location routing number.

• npdi - This is used to indicate whether an LNP query has been performed.

Examples

INVITE sip:3606;rn=2233445566;npdi=yes@10.129.43.23:5060 SIP/2.0

INVITE sip:3606;rn=2233445566;npdi@10.129.43.23:5060 SIP/2.0

INVITE sip:3606;npdi=yes@10.129.43.23:5060 SIP/2.0

INVITE sip:3606;npdi@10.129.43.23:5060 SIP/2.0

SIP-SS7 Interworking

This feature will interwork between the SS7 LNP information and SIP.

SS7 to SIP

Open

SIP to SS7

Configuration

Enabling or Disabling LNP Routing is accomplished in the IMG 1010 - ISUP Group pane.