Help > Functions and applications > a/b-Gateways > PBX systems COMmander/COMpact
PBX systems COMmander/COMpact
Existing systems with analogue telephones can be migrated to a COMtrexx system by using the existing PBXs as a/b gateways.
*Note: The following description applies to COMtrexx from firmware version 1.6 and COMmander/COMpact PBXs from firmware version 8.4.
*Note: Alternative for COMtrexx Business and COMtrexx Flex: By upgrading with a 4FXS module, there are now four internal ports for analogue devices (telephones, fax machines, door stations, announcement outputs) available.
PBXs supported as an a/b gateway 
The following Auerswald/FONtevo PBXs can be used as an a/b gateway in a COMtrexx. The value shown in brackets is the maximum number of VoIP channels that can be used in the direction of the COMtrexx. This value depends on the extension level (modules or releases required).
COMpact 4000 (10)
COMpact 5000/R (14)
COMpact 5200/R (20)
COMpact 5500 (32)
COMmander 6000/R/RX (38)
Supported Functions 
The following functions can be used in the normal way on the analogue telephones connected via the a/b gateway.
Incoming call with phone number and name display
In an external call, the name is only displayed if the phone number has been entered as a contact in the COMtrexx.
Outgoing call
Every call (including those to analogue devices) is sent via the COMtrexx.
Transfer with an announcement
The second VoIP channel on the a/b gateway is always used to transfer the call.
Splitting and targeted disconnection

Analogue telephones connected to the a/b gateway must be used in a different way to perform the following functions.
Use of function codes (e.g. for pick-up, logging into/out of groups, do not disturb)
This requires an exchange line access with ** account number
Example of Do not disturb on, with account number 9201: ** 9201 ## 8* 21 1

Telephones connected to the COMtrexx can be used in the normal way to perform the following functions, even when used together with the analogue telephones.
Incoming calls from analogue telephones with phone numbers and name display
Outgoing calls to analogue telephones
BLF status of the analogue telephones (free, call, busy)
Unsupported Functions 
The following functions cannot be used:
Cross-system busy statuses
Transfer without announcement (blind transfer)
Three-way call
Address books of the PBX being used as an a/b gateway
Provisioning by the COMtrexx of the PBX being used as the a/b gateway (or vice versa)
Preparation
The following preparations must be made in advance to ensure configuration runs smoothly.
Creating a telephone numbering plan 
The same internal phone numbers for the analogue telephones must be used in both PBXs. To achieve this, first create a valid telephone numbering plan for both PBXs.
Note the following points for the internal phone numbers for analogue telephones:
The phone numbers in the following components must be identical
in the COMtrexx: User
in the PBX used as the a/b gateway: Subscriber, account MSN
Phone numbers must have at least 3 digits
*Note: An additional telephone number range for account numbers must be added to the telephone numbering plan of the PBX to be used as an a/b gateway. Ideally this number range should be composed as follows: digit + internal number of each telephone.
Example:
Unused telephone number range: 9...
Internal numbers of the analogue telephones: 201 - 211
Account numbers: 9201 - 9211



A table in which the following values can be stored temporarily may be useful during configuration (especially for larger installations):
Name
Internal number
User name
Password



Setup overview 
This overview shows the components required in both PBXs and the value relationships between the components.
1. User for every analogue telephone
2. Phone for every analogue telephone
3. Provider for the connection to the COMtrexx
4. Subscriber for every analogue telephone
5. Account for every analogue telephone
Setup in COMtrexx
Configuring Users 
Requirements:
Telephone numbering plan - name and internal number for every analogue telephone

Components to be configured:
One user for every analogue telephone, with name and internal number from the telephone numbering plan:
User > Phone numbers > New > Settings > Save


Configuring Telephones 
Requirements:
Configured users

Components to be configured:
One telephone for every analogue telephone:
Telephones > Assignment > New > settings under Adding a device > Save
Make the following settings for the telephone:
Name: Name
Type: SIP soft client
Manufacturer: Another manufacturer (not necessary for firmware versions prior to 1.6.0)
*Important: Do not use the name Auerswald.
User: The user configured for the telephone


Telephone data required for further use:
SIP user name
Password > Password

Setup in the PBX used as a/b gateway
Delete settings that are no longer required 
Delete the following settings in the PBX that is to be used as the a/b gateway because they are no longer required.
Provider
Accounts
Subscriber
Address books

Configuring Providers 
Requirements:
You need to know the IP address and port of the COMtrexx

Components to be configured:
A provider based on the following template: International > int Auerswald PBX sub system IPv4 V201
Public switched tel. networks > VoIP > Provider > Import > Selection of the template > Import provider


Make the following settings for the provider:
Configure
SIP > Domain: COMtrexx IP address
SIP > Registrar: IP address and port of the COMtrexx
Settings > Sub-system operation: on
Settings > The provider has emergency call ability: on
Number presentation (outgoing) > Format of called phone number: send as dialled
Number presentation (outgoing) > Format of own phone number: Without country code (e. g. 05306...)
Number presentation (outgoing) > Number presentation type: In the display text
Number presentation (outgoing) > Method of number presentation suppression: Anonymous


Configuring Subscribers 
Requirements:
Telephone numbering plan - name and internal number for every analogue telephone

Components to be configured:
One subscriber for every analogue telephone, with name and internal number from the telephone numbering plan:
Subscriber (scr.) > Phone numbers > New > settings under Add subscriber > Save


Make the following settings for the subscriber:
Configure
Module/Port: Module/port to which the telephone is connected
Exchange line settings > Exchange line authorisation: International
Exchange line settings > Preferred exchange line: Automatic occupation
Authorisations > Transfer of external calls to external: on
Settings > Exchange line request: Direct exchange line phone
Settings > Transmission of the display name: on
*Note: Properties such as the exchange line authorisation for the analogue telephone must be set via the user of the COMtrexx, not via the subscriber.

Configuring Accounts 
Requirements:
A telephone numbering plan containing an internal number and name for every analogue telephone
A configured provider
You need to know the SIP user name and Password of the telephones configured in the COMtrexx

Components to be configured:
One account for every analogue telephone:
Public switched tel. networks > VoIP > Accounts > New > settings under Adding a device > Save
Make the following settings for the account:
Provider: int Auerswald PBX sub system IPv4 V201
Account name: Name
Connection type: PTMP connection
Use: on


The following additional settings must be made for the account:
Configure
Network Provider > Account has emergency call ability: off
Access data > Exchange line access number (account number): Digit in the free telephone numbering range + internal number from the telephone numbering plan
Access data > User name: SIP user name of the telephone configured in the COMtrexx
Access data > Password: Password of the telephone configured in the COMtrexx
Phone Numbers for PTMP connection > Multiple subscriber number (MSN): internal number from the telephone numbering plan