# SIP Peer Profile Called Party Inward Dialing Modification

## Purpose

The Inward Dialing Modification feature allows you to alter the dial strings of inbound calls for a link.

Use this form to select which digit modification rules you wish to apply to the SIP "called party" type headers of inbound calls. These include Request URI, To, and Refer-To headers in Invite messages, and Contact headers in 3xx messages. Use the Inward Dialing Modification form to create the rules.

## Conditions

None

## Field Descriptions

Parameter | Description | Default Value
Network Element | Read-only, protected field. The Network Element name (programmed in the Network Elements form) from the pull-down list. | Blank
SIP Peer Profile Label | Read-only, protected field. An alphanumeric string up to nine characters for the SIP Peer Profile. | Blank
Outbound Proxy Server | Read-only, protected field. The network element to be used for the Outbound Proxy Server. |
CPN Restriction | Display-only, protected field. When this option is enabled, anonymous@anonymous.invalid is added to the From header of outgoing calls and CPN substitution is prevented on incoming calls. | False
Trunk Service | Read-only, protected field. The Trunk Service number where the COS/COR and incoming digit modification setting are set. | 1
Session Timer | Read-only, protected field. The SIP session timeout value (in seconds). If the peer does not respond within the allocated time, the session (call) will be torn down. The default is 90. The range is from 90-9999. | 90
Zone | Read-only, protected field. Devices are grouped together into a zone numbered 1 to 999 to which compression policies can be applied. Program zones in the Network Elements form. | 1
Called Party Inward Dialing Modification
Index | Read-only, protected field. Each index number represents a unique inward dialing modification rule. The rules are applied in consecutive order; for example, rule 1 is applied before rule 2. |
Digits to Match | Read-only, protected field. The digits to match at the beginning of the dial string in inbound calls. | Blank
Digit Length Operator | Display-only, protected field. The digit length operator to apply to the incoming call. Valid operators: undefined equal to less than greater than greater than or equal to less than or equal to | undefined
Digit Length | Read-only, protected field. The number of digits to match (0-32) at the beginning of the dial string in inbound calls. | 0
Number of Digits to Absorb | Read-only, protected field. The number of digits to absorb (0-32) at the beginning of the dial string in inbound calls. | 0
Digits to be Inserted | Read-only, protected field. The string to insert at the beginning of the dial string in inbound calls. | Blank
Add Member | Select an index number between 1 and 100. Index numbers refer to the digit modification rules programmed in the Inward Dialing Modification form. If the initial digits of an inbound SIP Called Party number sent over this link match the criteria programmed for this index number, the system will modify the number. The modification is applied to inbound calls with the following "called party" type SIP headers: Request URI To Refer-To headers in Invite messages Contact headers in 3xx messages |
Delete Member | Select an index number to delete from the list. |