View source for Configuring SIP Registration for Open NAP

=== '''''Applies to version(s): v3.0''''' ===
{{DISPLAYTITLE:Configuring SIP Registration for Open NAP}}
A SIP domain represents a grouping of devices (or users) that can communicate with one another.
You must configure SIP Registration Domain for your system. The first step in doing so is to create a SIP Domain:



1- Click '''SIP Domain''' in the navigation panel

[[Image:SIP_Domain_NavigationMenu.png]]


2- Click '''Create New Domain'''

[[Image:Create_SIP_Domain.png]]


3- Create the new Domain:

* Enter a configuration '''Name''' for this domain.
* Enter a '''Domain Name''' for the SIP Registration Domain (domain can be a FQDN or an IP address)
* Set the number '''Maximum Registered Users''' for this domain
* Set the Expires value used by SBC when the remote device doesn't supply one ('''Default Contact Expire''')
* Select '''Routing Method''' the system will use to route calls to registered users (if enabled in routing scripts).
** '''Register source''': Sends SIP Invite to the registering source IP address.
** '''Contact''': Sends SIP Invite to the 'contact' from the Register message.
* Set the '''Default Contact Expiration''', this value will be used when no ''Expires'' value is supplied by the user agent.
* Set the '''Minimum Contact Expiration''', this is the minimum ''Expires'' value that can be supplied by a user agent. Lower values will be rejected with a 423 'Interval too brief' response.
* Set the '''Maximum Contact Expiration''', this is the maximum ''Expires'' value that can be supplied by a user agent. Higher value are replaced by this parameter.
* Forwarding Parameters: 
** Select the Registration '''Forwarding Mode''' to the registrar:
*** '''Contact Remapping''': Changes the user and the IP address.
*** '''Contact Passthrough''': Doesn't change anything. Enables devices to be contacted directly without going through the SBC.
** Set '''Minimum Registrar Expiration''', this is the minimum ''Expires'' value sent by the SBC to the registrar.  If a user agent 'Expires' value is greater than this parameter, the SBC will do rate adaptation between the user agent and the Registrar.
** Set '''Maximum Pending Register Forward''', the maximum number of simultaneous pending register requests allowed for this domain.  New REGISTER request are being refused passed this threshold.
** Set '''Maximum Simultaneous Register Forward''', the  maximum number of simultaneous active register requests allowed for this domain. New REGISTER request are being refused passed this threshold.
** Select the Registration '''Registrar Selection Mode''' to the registrar:
*** '''Active/Standby''': The active registrar is the one with status up and the lowest priority (automatic fallback).
** Enable the '''Forward After Switchover''': After a switchover, the first register refresh request from each user will be forwarded to the active registrar.
* Click '''Create'''

[[Image:Create_SIP_Domain1.png]]


4- Verify that the '''Sip registration domain was successfully created''' message appears

[[Image:Create_SIP_Domain2.png]]
<br><br>
[[Image:Create_SIP_Domain3.png]]

5- Add the domain to one or multiple NAPs from which users are allowed to register for this domain
* Click '''NAPs''' in the navigation panel
* Click on a NAP to bind the SIP Domain to
* Add the SIP Domain to the NAP (bottom of the page):
[[Image:bind_domain_to_nap.png]]


6- Multiple registrars (registration redundancy)
Multiple registrars can be created per domain, for redundancy.
* Registrars are ordered by priority
* Users' registration requests are forwarded to the available registrar with the highest priority in the list
* SIP 'options' polling is used to determine which registrars are available or not

[[Image:multiple_registrars.png]]


== Create routes for registered users ==
In most cases, TBSC will be required to route SIP calls (SIP Invite) to registered users. That's done by [[Sip_registration_forwarding#SIP_Calls_routing|creating appropriate routes]].