help Configuration Planner › Creating a configuration package › Define Trunk Groups
Define Trunk Groups
A trunk group represents all the trunks of the same type which are grouped together in it.
To define a Trunk Group  
1 In the menu select “Trunk Groups”.
*The “Trunk Groups” list will appear.
2 Click on the “Add Trunk Group” button.
*The “General” tab appears.
* 
Call permissions of a trunk group only apply to incoming calls!
The advanced call permissions (more than "internal calls") could, depending on the configured forwarding entries, be misused by external callers. Protect your SwyxServer by only allowing external forwarding of incoming calls in exceptional cases.
Label
Explanation
Name
Enter the name of the Trunk Group. The name must be unambiguous within SwyxWare.
Description
If applicable, enter a brief description.
Location
Select a defined Location to which the new Trunk Group should be assigned.
Type
Select the Type of the Trunk Group:
*ISDN
*SIP
*SIP Gateway
Profile
Select the Trunk Group profile.
A trunk group profile specifies how the trunk interprets and handles the call numbers. Depending on the trunk type, a number of predefined profiles are available. For each of these profiles, the number format is specified. For SIP trunks in particular, the profile specifies the provider and the necessary SIP parameters.
Please contact your specialist dealer for an overview of compatible SIP providers and the functions they offer in relation to SwyxWare.
The Swyx knowledge base contains a related entry, which is constantly updated. Simply visit:
Calling Right
Specify what rights a call has when coming in via this trunk. By doing so you specify whether it may use other trunk groups (and which ones) to leave this SwyxServer installation, if its destination is not a user of this SwyxServer.
*deny all calls
*internal calls
*Local calls
*National destinations
*European destinations
*no call restrictions
Enable Trunk Recording
Activate the check box to permanently record all calls that are made via this trunk group, provided this is activated in the SwyxServer settings.
* 
Please note that the option pack “SwyxMonitor“ must be installed to activate recording on a trunk.
* 
If you select the “SIP” type and the “SIP (Customized)” profile, the tabs “SIP (Customized)” and “Number formatting” will be enabled.
3 Select the “SIP (Customized)” tab.
* 
The Registrar port must match the selected transport protocol. Leave the field empty if you did not receive information on the port by your provider. The port is determined via DNS query.
* 
Make sure that the selected transport protocol is supported by your provider.
Label
Explanation
Proxy
Enter the SIP proxy and the port for outgoing calls.
The SIP proxy server takes over the connection setup to the appropriate subscriber, first checking which SIP registrar the relevant subscriber is logged on with. From this it requests and receives the current IP address of the subscriber, and can thus deliver the call to this address.
Port
Enable SIP registration
Activate the check box to permit SIP registration.
Registrar
Enter the registrar.
REGISTER messages are sent to this address. If no value is entered here, the value configured under proxy will be applied.
Registrar Port
In the “Port” field you define the port on which the configured registrar receives the registration request.
Re-registration Interval
Enter a value in seconds.
The "Re-Registration Interval" defines how often the registration must be updated. A small value will allow you to quickly recognize the loss of the SIP connection to the provider. A high value results in lower network burden in standby.
Enable STUN support
Activate the check box to permit STUN support.
STUN is a network protocol that recognizes the existence and type of firewalls and NAT routers and takes this information into consideration. It enables the uncomplicated use of devices (e. g. SIP telephones) and programs in networks that should receive information from the internet.
STUN Server
Specify the STUN server and the associated port for use by the SIP devices.
STUN Server Port
Realm
Define the SIP realm of the provider.
An SIP URI (userId@realm) is derived from the user ID (userId), the configuration of the SIP account, and the realm of the provider (realm). If this field is left blank, the value registrar or proxy will be used.
DTMF mode
Select the DTMF method.
This mode defines how the provider proceeds with the keyboard input of a user during a call (DTMF signalling).
None
DTMF signalization is deactivated
RFX2833 Event
RFC2833_Event: DTMF signalization, based on the event mechanism described in RFC2833, will be used.
Info Method DTMF Relay
DTMF signalling as recommended by Cisco (application type DTMFRelay) will be used.
Transport Protocol
Select the transport protocol that you want to assign the Trunk Group:
Automatic
The transport protocol is determined automatically by DNS lookup.
UDP
This transport protocol is supported by most SIP providers. It requires the lowest bandwidth, however, it carries a higher risk of data loss.
TCP
This transport protocol is known to be reliable, however, it requires higher bandwidths.
TLS
This transport protocol has TCP characteristics and supports encryption. When selecting this protocol SIP packets are transmitted encrypted.
Encryption
This option will only make sense if you select TLS as the transport protocol.
Activate the check box to make sure that the voice data is encrypted between SIP provider and SwyxLinkManager.
4 Select the “Number Formatting” tab.
* 
Procedures for converting outgoing numbers and interpreting incoming numbers are defined within a trunk group. In the properties of a trunk group, the selected protocol contains a detailed definition of which numbers (outgoing/incoming and calling/called number) are converted into which formats. This mapping of formats can be modified subsequently by administrators.
Label
Explanation
Conversion for inbound calls: Calling party number
Select a number formatting profile
*Canonical with plus
*Canonical without plus
*CLIP no screening
*Dial as a PBX user
*Extension
*Fixed Subscriber
*ISDN Italy
*ISDN Netherlands CLI
*National
*Subscriber Number
*Transparent
*Type and Plan
For information about the number formatting formats please refer to Number formats.
Conversion for inbound calls: Called Party Number
Conversion for outbound calls: Calling party number
Conversion for outbound calls: Called Party Number
5 Click on the button to save the settings.
*The new Trunk Group appears in the list.
Last modified date: 07/17/2019