Extron electronics DMP 128 Plus C User manual

DMP 128 Plus C V
DMP 128 Plus C V AT
RingCentral Configuration Guide
REVISION: 1.0
DATE: JUNE 26TH 2018

Revision Date: 06/26/18
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DMP 128 Plus C V / C V AT –RingCentral
Revision Log
Date
Version
Notes
June 26th 2018
1.0
First Release: Applies to Firmware 1.01.0010

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DMP 128 Plus C V / C V AT –RingCentral
Table of Contents
1.0 Introduction ......................................................................................................................... 4
2.0 Configuring RingCentral for DMP 128 Plus C V (AT) VoIP Registration ............................... 4
3.0 Configuring DMP 128 Plus C V (AT) VoIP Lines .................................................................... 5
3.1 Network Interface Configuration ..................................................................................... 5
3.2 Transport Configuration................................................................................................... 6
3.3 Line Registration............................................................................................................... 7
3.4 Outbound Proxy ............................................................................................................... 8
3.5 Codecs ............................................................................................................................ 10
3.6 Dialing............................................................................................................................. 11
3.7 System Overview............................................................................................................ 12
3.8 Troubleshooting ............................................................................................................. 12
Appendix A: RTP Port Range ..................................................................................................... 13

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DMP 128 Plus C V / C V AT –RingCentral
1.0 Introduction
This document provides essential instructions for registering DMP 128 Plus C V (AT) VoIP lines as
a RingCentral cloud-based SIP extension.
DMP 128 Plus C V / C V AT Firmware Version 1.01.0010 or higher is required.
2.0 Configuring RingCentral for DMP 128 Plus C V (AT) VoIP Registration
Prior to proceeding with this guide, contact RingCentral in order to add or purchase SIP
extensions for use with the DMP 128 Plus C V (AT). The DMP behaves as a 3rd party SIP device.
The following credentials are required for each line that is to be used on the system –
1) SIP Domain and Port Number
2) Outbound Proxy and Port Number
3) User Name
4) Password
5) Authorization ID

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DMP 128 Plus C V / C V AT –RingCentral
3.0 Configuring DMP 128 Plus C V (AT) VoIP Lines
VoIP configuration of the DMP 128 Plus is handled exclusively through a web interface, served
from the device itself. The VoIP landing page is accessed through an address of the format -
http://192.168.254.254/www/voip.html
- where 192.168.254.254 in this example is the default IP address of the DMP 128 Plus device.
Up to 8 lines may be configured. Note that each line intended for use will require a unique
Extension to be specified as part of the IP Office configuration process.
3.1 Network Interface Configuration
Click on the Network tab followed by Interface tab to set up the desired network interface on
the DMP 128 Plus; either LAN1 or LAN2 may be used for VoIP. VLAN tagging is available on
either interface if required. Up to two DNS entries may be manually specified.
Click Apply after making any changes in order to restart the networking services on the device.

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3.2 Transport Configuration
Click on the Transport tab to access signaling transport configuration. Check that the transport
is set to UDP.
In the event that changes need to be made, click Apply to commit any adjustments to the
device.

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3.3 Line Registration
Click on the first line tab to be configured as part of the system, e.g. Line 1. Refer to the
credentials provided by RingCentral (Section 2.0).
1) User Name: Set this to match the User Name from RingCentral.
2) Authentication Name: Set this to match the Authorization ID.
3) Authentication Password: Set to match the Password.
4) Display Name: Optional. Specify an identifier for the line if required.
5) Primary Proxy Name/IP: Enter the SIP Domain
6) Primary Proxy Port: Specify the SIP Domain Port Number.
Once the above settings have been entered, click the Apply button to save to the device.
Do not attempt to register the line at this stage.

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DMP 128 Plus C V / C V AT –RingCentral
3.4 Outbound Proxy
NOTE:
The following steps must be carried out in order to set the Outbound Proxy and Port Number
required for RingCentral registration.
1. Create a new blank text file using a suitable basic text editor.
2. Enter the following text into the document, replacing the ‘1’ in ‘line1’ with the required
DMP line ID (1 –8):
{"users":[{"id":"line1","outbound_proxy":"sip10.ringcentral.com",
"outbound_proxy_port":"5090"}]}
•Replace “sip10.ringcentral.com” with the Outbound Proxy Address provided by
RingCentral (Section 2.0), if different.
•Change “5090” to the Outbound Proxy Port provided by RingCentral (Section 2.0), if
different.
3. Save the file as voipConfig.conf.

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DMP 128 Plus C V / C V AT –RingCentral
4. Navigate to the DMP VoIP configuration webpage and click on the System tab.
5. Under Export System Configuration, click the Export button to back up the current VoIP
configuration to disk. The file will be saved in the default web browser download
directory.
6. Under Import System Configuration, click the Browse button to locate the
voipConfig.conf file created in steps 1 to 3.
7. Click the Import button to update the DMP with the new outbound proxy settings. A
notification will appear once the settings have applied successfully.
8. Return to the Line - Registration tab and click Register to complete the registration
process.
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5

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3.5 Codecs
The availability and priority of codecs may be changed from within the Audio tab. Codecs will
only be available for use within phone calls if they are moved from the Available to the
Assigned column. By default, G.711u and G.711a are assigned to the system. Codec assignment
and priority can be set per line.
Click the Apply button to commit any changes to the device.

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DMP 128 Plus C V / C V AT –RingCentral
3.6 Dialing
Use the Dialing tab to select the desired DTMF signaling method. The default DMP 128 mode is
In-Band. Other available options are as follows:
•Out of Band –SIP INFO
•Out of Band –SIP INFO (RELAY)
•Out of Band –RFC 2833
Click Apply after selecting the desired DTMF signaling method for the line. This can be set per
line.

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3.7 System Overview
Once all required lines have been registered to RingCentral, use the Home tab to view a
summary of the system, as required. In the example below, one of two registered lines (line 3)
is currently in an active call. Appearance-specific (caller-specific) details for active calls can be
accessed by clicking on the corresponding Line entry.
3.8 Troubleshooting
In the event of failure to register, review the following:
•Check that the credentials provided by RingCentral are correctly entered into the
registration fields for each line.
•Check network interface settings, including DNS fields.
•Click on the Logs tab to inbound and outbound SIP transactions. The absence of inbound
transactions indicates a network routing problem. Registration-specific problems may
be indicated by corresponding SIP responses such as 403 –Forbidden.

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Appendix A: RTP Port Range
The default port range for VoIP RTP traffic on the DMP is 50000 –50999. To change this range,
the following steps must be carried out.
1. Create a new blank text file using a suitable basic text editor.
2. Enter the following text into the document (in this example, the port range is being
changed to 40000-40999; replace these values with the desired range) -
{"network":{"rtpstartport":40000,"rtpendport":40999}}
3. Save the file as voipConfig.conf.

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DMP 128 Plus C V / C V AT –RingCentral
4. Navigate to the DMP VoIP configuration webpage and click on the System tab.
5. Under Export System Configuration, click the Export button to back up the current VoIP
configuration to disk. The file will be saved in the default web browser download
directory.
6. Under Import System Configuration, click the Browse button to locate the
voipConfig.conf file created in steps 1 to 3.
7. Click the Import button to update the DMP with the new RTP Port Range settings. A
notification will appear once the settings have applied successfully.
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