IMS Usrloc SCSCF Module

Jason Penton

   Smile Communications

Edited by

Richard Good

   Smile Communications

Yasin Caner

   Copyright © 2012 Smile Communications
     __________________________________________________________________

   Table of Contents

   1. Admin Guide

        1. Overview
        2. Dependencies

              2.1. Kamailio Modules

        3. Parameters

              3.1. db_url (string)
              3.2. db_mode (string)
              3.3. maxcontact (int)
              3.4. maxcontact_3gpp (int)
              3.5. maxcontact_behaviour (int)
              3.6. max_subscribes(int)
              3.7. sub_dialog_hash_size(int)
              3.8. timer_procs(int)
              3.9. timer_interval (int)
              3.10. desc_time_order (int)
              3.11. matching_mode (int)
              3.12. cseq_delay (int)
              3.13. fetch_rows(int)
              3.14. hash_size (string)
              3.15. subs_hash_size (int)
              3.16. contacts_hash_size (integer)
              3.17. nat_bflag (integer)
              3.18. contact_delete_delay (int)
              3.19. support_wildcardPSI (int)
              3.20. unreg_validity (int)
              3.21. user_data_xsd (string)

        4. RPC Commands

              4.1. ulscscf.status
              4.2. ulscscf.showimpu
              4.3. ulscscf.snapshot

   2. Frequently Asked Questions

   List of Examples

   1.1. Set db_url parameter
   1.2. Set db_mode parameter
   1.3. Set maxcontact parameter
   1.4. Set maxcontact_3gpp parameter
   1.5. Set maxcontact_behaviour parameter
   1.6. Set subscription_expires_range parameter
   1.7. Set sub_dialog_hash_size parameter
   1.8. Set timer_procs parameter
   1.9. Set timer_interval parameter
   1.10. Set desc_time_order parameter
   1.11. Set matching_mode parameter
   1.12. Set cseq_delay parameter
   1.13. Set fetch_rows parameter
   1.14. Set hash_size parameter
   1.15. Set subs_hash_size parameter
   1.16. Set contacts_hash_size parameter
   1.17. Set nat_bflag parameter
   1.18. Set contact_delete_delay parameter
   1.19. Set support_wildcardPSI parameter
   1.20. Set unreg_validity parameter
   1.21. Set unreg_validity parameter

Chapter 1. Admin Guide

   Table of Contents

   1. Overview
   2. Dependencies

        2.1. Kamailio Modules

   3. Parameters

        3.1. db_url (string)
        3.2. db_mode (string)
        3.3. maxcontact (int)
        3.4. maxcontact_3gpp (int)
        3.5. maxcontact_behaviour (int)
        3.6. max_subscribes(int)
        3.7. sub_dialog_hash_size(int)
        3.8. timer_procs(int)
        3.9. timer_interval (int)
        3.10. desc_time_order (int)
        3.11. matching_mode (int)
        3.12. cseq_delay (int)
        3.13. fetch_rows(int)
        3.14. hash_size (string)
        3.15. subs_hash_size (int)
        3.16. contacts_hash_size (integer)
        3.17. nat_bflag (integer)
        3.18. contact_delete_delay (int)
        3.19. support_wildcardPSI (int)
        3.20. unreg_validity (int)
        3.21. user_data_xsd (string)

   4. RPC Commands

        4.1. ulscscf.status
        4.2. ulscscf.showimpu
        4.3. ulscscf.snapshot

1. Overview

   This module serves as a storage engine for SCSCF contacts, much like
   the standard Kamailio module that is usrloc, is a storage engine for
   standard SIP contacts.

2. Dependencies

   2.1. Kamailio Modules

2.1. Kamailio Modules

   The following modules must be loaded before this module:
     * TM
     * Presence
     * IMS dialog

3. Parameters

   3.1. db_url (string)
   3.2. db_mode (string)
   3.3. maxcontact (int)
   3.4. maxcontact_3gpp (int)
   3.5. maxcontact_behaviour (int)
   3.6. max_subscribes(int)
   3.7. sub_dialog_hash_size(int)
   3.8. timer_procs(int)
   3.9. timer_interval (int)
   3.10. desc_time_order (int)
   3.11. matching_mode (int)
   3.12. cseq_delay (int)
   3.13. fetch_rows(int)
   3.14. hash_size (string)
   3.15. subs_hash_size (int)
   3.16. contacts_hash_size (integer)
   3.17. nat_bflag (integer)
   3.18. contact_delete_delay (int)
   3.19. support_wildcardPSI (int)
   3.20. unreg_validity (int)
   3.21. user_data_xsd (string)

3.1. db_url (string)

   database URL for storing impu/contacts records

   Example 1.1. Set db_url parameter
        modparam("ims_usrloc_scscf", "db_url", "mysql//username:password@localho
st/scscf")

3.2. db_mode (string)

   This is the database mode to be used for the SCSCF usrloc data
   persistent storage. Currently this module supports the Write-Back
   scheme only.
     * 0 - This disables database completely. Only memory will be used.
       Contacts will not survive restart.
     * 1 - Write-Backend scheme. All changes are made to memory and
       database synchronization is done in the timer

   Default value is 0.

   Example 1.2. Set db_mode parameter
...
        modparam("ims_usrloc_scscf", "db_mode", 1)

3.3. maxcontact (int)

   The parameter can be used to limit the number of contact for each impu

   Default value is 0(max)

   Example 1.3. Set maxcontact parameter
...
        modparam("ims_usrloc_scscf", "maxcontact", 10)

3.4. maxcontact_3gpp (int)

   The parameter can be used to limit the number of 3GPP contact for each
   impu

   Default value is 0.(max)

   Example 1.4. Set maxcontact_3gpp parameter
...
        modparam("ims_usrloc_scscf", "maxcontact_3gpp", 0)

3.5. maxcontact_behaviour (int)

   Behaviour of usrloc , after impu reach max contacts limit.
     * 0 - Disabled
     * 1 - Reject after reaching limit.
     * 2 - Overwrite

   Default value is 0.

   Example 1.5. Set maxcontact_behaviour parameter
...
        modparam("ims_usrloc_scscf", "maxcontact_behaviour", 2)

3.6. max_subscribes(int)

   Max number of subscribes allowed per watcher for each IMPU

   Default value is 0.

   Example 1.6. Set subscription_expires_range parameter
...
        modparam("ims_usrloc_scscf", "max_subscribes", 2)

3.7. sub_dialog_hash_size(int)

   Subscriber dialog hash table size

   Default value is 10.

   Example 1.7. Set sub_dialog_hash_size parameter
...
        modparam("ims_usrloc_scscf", "sub_dialog_hash_size", 512)

3.8. timer_procs(int)

   process number of handling registeration

   Default value is 0

   Example 1.8. Set timer_procs parameter
...
        modparam("ims_usrloc_scscf", "timer_procs", 5)

3.9. timer_interval (int)

   Number of seconds between two timer runs. The module uses a timer to
   delete expired contacts, synchronize with database and other tasks,
   that need to be run periodically

   Default value is 90

   Example 1.9. Set timer_interval parameter
...
        modparam("ims_usrloc_scscf", "timer_interval", 120)

3.10. desc_time_order (int)

   If the user's contacts should be kept timestamp ordered; otherwise the
   contact will be ordered based on q value. Non 0 value means true.

   Default value is timestamp ordering not enabled

   Example 1.10. Set desc_time_order parameter
...
        modparam("ims_usrloc_scscf", "desc_time_order", 1)

3.11. matching_mode (int)

   What contact matching algorithm to be used.
     * 0 - Contact Only matching
     * 1 - Contact and Callid Matching
     * 2 - Contact and Path header matching
     * 3 - Only contact IP and Port Matching

   Default value is 0.

   Example 1.11. Set matching_mode parameter
...
        modparam("ims_usrloc_scscf", "matching_mode", 0)

3.12. cseq_delay (int)

   Delay (in seconds) for accepting as retransmissions register requests
   with same Call-ID and Cseq.

   Default value is 20.

   Example 1.12. Set cseq_delay parameter
...
        modparam("ims_usrloc_scscf", "cseq_delay", 20)

3.13. fetch_rows(int)

   The number of the rows to be fetched at once from database when loading
   the location records.

   Default value is 2000.

   Example 1.13. Set fetch_rows parameter
...
        modparam("ims_usrloc_scscf", "fetch_rows", 3000)

3.14. hash_size (string)

   The number of entries of the hash table used by usrloc

   Default value 512

   Example 1.14. Set hash_size parameter
...
        modparam("ims_usrloc_scscf", "hash_size", 512)

3.15. subs_hash_size (int)

   The number of entries of the hash table used by usrloc to store the ims
   subscribe records

   Default value 512

   Example 1.15. Set subs_hash_size parameter
...
        modparam("ims_usrloc_scscf", "subs_hash_size", 512)

3.16. contacts_hash_size (integer)

   The number of entries of the hash table used by usrloc to store the
   contact records

   Default value is 512

   Example 1.16. Set contacts_hash_size parameter
...
        modparam("ims_usrloc_scscf", "contacts_hash_size", 512)

3.17. nat_bflag (integer)

   NAT marker to handle natted registration

   Default value is 0

   Example 1.17. Set nat_bflag parameter
        modparam("ims_usrloc_scscf", "nat_bflag", 3)

3.18. contact_delete_delay (int)

   If contact is put into delay delete state ,this is how long we delay
   before deleting

   Default value is 30

   Example 1.18. Set contact_delete_delay parameter
        modparam("ims_usrloc_scscf", "contact_delete_delay", 32)

3.19. support_wildcardPSI (int)

   Wildcard Public-Service-Identity (RFC5002). it will be actived by
   setting 1

   Default value is 0.(disabled)

   Example 1.19. Set support_wildcardPSI parameter
        modparam("ims_usrloc_scscf", "support_wildcardPSI", 0)

3.20. unreg_validity (int)

   Default validity time in seconds for unregister assignment to SCSCF

   Default value is 1800

   Example 1.20. Set unreg_validity parameter
        modparam("ims_usrloc_scscf", "unreg_validity", 0)

3.21. user_data_xsd (string)

   Default value is 1800

   Example 1.21. Set unreg_validity parameter
        modparam("ims_usrloc_scscf", "user_data_xsd", "/usr/local/etc/kamailio/C
xDataType_Rel6.xsd")

4. RPC Commands

   4.1. ulscscf.status
   4.2. ulscscf.showimpu
   4.3. ulscscf.snapshot

   Exported RPC commands.

4.1. ulscscf.status

4.2. ulscscf.showimpu

4.3. ulscscf.snapshot

Chapter 2. Frequently Asked Questions

   2.1. Where can I find more about Kamailio?
   2.2. Where can I post a question about this module?
   2.3. How can I report a bug?

   2.1.

   Where can I find more about Kamailio?

   Take a look at https://www.kamailio.org/.

   2.2.

   Where can I post a question about this module?

   First at all check if your question was already answered on one of our
   mailing lists:
     * User Mailing List -
       https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
     * Developer Mailing List -
       https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev

   E-mails regarding any stable Kamailio release should be sent to
   <sr-users@lists.kamailio.org> and e-mails regarding development
   versions should be sent to <sr-dev@lists.kamailio.org>.

   2.3.

   How can I report a bug?

   Please follow the guidelines provided at:
   https://github.com/kamailio/kamailio/issues.