HMR To Strip Leading Digit From Sip Invite [Request-URI]

Asset ID:	1-71-2393502.1
Update Date:	2018-05-07
Keywords:

Solution Type Technical Instruction Sure

Solution 2393502.1 : HMR To Strip Leading Digit From Sip Invite [Request-URI]

Applies to:

Integrated Software for Acme Packet 3820 - Version E-Cx6.4.0 and later
Acme Packet 3900 - Version E-Cz7.4.0 and later
Acme Packet 4500 - Version S-Cx6.4.x and later
Information in this document applies to any platform.

Goal

Acme SBC receives the following Invite in the Request-Line

INVITE sip:011567890@1.10.6.30:5060 SIP/2.0

User wants to remove the leading digit from the User-part in the Invite.

The final result should look like:

INVITE sip:11567890@1.10.6.30:5060 SIP/2.0

Solution

The following HMR can be used to strip the leading digit from the INVITE

sip-manipulation
  name Strip_First_digit_from_User_part
  description
  split-headers
  join-headers
  header-rule
  name Strip_1st_digit
  header-name Request-URI
  action manipulate
  comparison-type pattern-rule
  msg-type request
  methods INVITE
  match-value
  new-value
  element-rule
  name delete_first_digit
  parameter-name
  type uri-user
  action replace
  match-val-type any
  comparison-type pattern-rule
  match-value ^[0-9](.*)$
  new-value $1

The Regex expression can be tested as below:

Acme_4500(test-pattern-rule)# show
Pattern Rule:
  Expression : ^[0-9](.*)$
  String : 011567890@1.10.6.30:5060
  Matched : TRUE
  Matches:
$0 011567890@1.10.6.30:5060
$1 11567890@1.10.6.30:5060

References

<NOTE:2151748.1> - How do customers engage Consultancy Services for Session Border Controller products ?

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