Grandstream UCM63xx Series Remote Connect EndPoint Configuration Guide

Introduction

Thank you for purchasing the UCM6301/UCM6302/UCM6304/UCM6308 IP PBX. The Grandstream UCM6300 series IP PBX is based on Asterisk 16 system. It provides powerful functions, a friendly interface for remote management, and an easy-to-expand all-in-one communication solution for enterprises of all sizes. The UCM6300 series IP PBX supports up to 3000 extensions with PBX features including audio/video calling, video conferencing, video surveillance, PBX data management and analysis, UCM RemoteConnect, and device remote access. It is an ideal choice for enterprises looking for an all-in-one solution for users to communicate efficiently and work productively.

The UCM6300 series IP PBX provides UCM RemoteConnect service, which offers users a quick setup to start working remotely, including the GS Wave web app using WebRTC and the Wave mobile app on Android and iOS systems to communicate and join meetings, sync up and manage extensions, receive alerts and reports, view and manage storage via cloud, and much more. The UCM6300 UCM RemoteConnect service is offered via Grandstream Device Management System (GDMS). Please visit the GDMS platform for UCM RemoteConnect service plan information and purchasing plan, device remote management, cloud storage management, and etc.

This document describes how to configure end users' IP phones to register to UCM6300 series IP PBX using RemoteConnect service. With RemoteConnect service, IP phones behind NAT can register to UCM6300 series and communicate with other devices without additional settings in your network.

Prerequisites

The UCM RemoteConnect service on UCM6300 series must be used with Grandstream Device Management System (GDMS). After the UCM is connected with GDMS, the RemoteConnect information displays on the UCM6300 web GUI under Value-added Features > UCM RemoteConnect page. In this page, STUN Address, UCM Public Address, and Public TLS Port information are needed for IP phones to register to UCM6300 series.

Figure 1: UCM RemoteConnect Plan Information displays the UCM's RemoteConnect service details, including Subscription Tier, Period, Plan Status, Concurrent Users, Cloud Storage, STUN Address, UCM Public Address, and Public TLS Port, which are necessary for IP phone registration.

Users can configure the IP phone to register to UCM6300 series and manage the IP phone remotely via GDMS, or directly configure the account information on the IP phone manually.

Configure IP Phones via GDMS

The GDMS admin can configure IP phones remotely with the settings required for RemoteConnect. To do so, please follow the steps below:

1. In your web browser, open the GDMS address and log in with your GDMS account: http://www.gdms.cloud/login
2. After logging in GDMS as admin, navigate to VoIP Account > SIP Server page. Click on "Add Server" and configure the following:
   • Server name: Enter the server name for identification purpose.
   • SIP Server: Enter the UCM Public Address: Public TLS Port.
   • NAT Traversal: STUN
   • Other settings are optional and can be configured as needed.

Figure 2: Add New SIP Server on GDMS shows the interface for adding a SIP server, detailing fields like Server Name, SIP Server, and NAT Traversal.

3. Navigate to VoIP Account > SIP Account, select the accounts that need to use the RemoteConnect Public UCM address as SIP server, then click on "Modify SIP Server". Select the newly created SIP server address from step 2 to be used here. Click on "Save".

Figure 3: Batch Configure SIP Server for SIP Accounts illustrates how to assign the new SIP server to multiple accounts simultaneously.

4. Navigate to VoIP Account > SIP Account, assign the account which has its SIP server as the UCM public address to the device. If the account has a device assigned before, GDMS will send the update account information to the assigned device.

Figure 4: Assign Device to SIP Account shows the process of linking a specific IP phone device to a configured SIP account.

Notes:

• If the IP phone device is currently not supported by GDMS, this device cannot be configured and managed by GDMS.
• After GDMS assigns a SIP account to the IP phone device, if the device cannot register or experiences call issues, please check the device configuration in the below section [CONFIGURE UCM REMOTECONNECT SERVICE FOR IP PHONES] to see if it's configured properly.

Configure UCM RemoteConnect Service for IP Phones

IP phone end devices behind NAT in an external network can register to the UCM6300 series for remote work purposes. Please refer to the below configuration example on GXV3370.

1. Log in to the GXV3370 web UI as admin, navigate to Account > Basic Settings page and configure the following:
   • SIP Server: Enter the UCM Public Address: Public TLS Port. This information can be found under UCM web UI > Value-added Features > UCM RemoteConnect > Plan page.
   • NAT Traversal: STUN

Figure 5: GXV3370 Account Configuration Page displays the basic account settings on a GXV3370 phone, including SIP Server and NAT Traversal.

2. Go to Account > SIP Settings and configure SIP transport to "TLS".

Figure 6: GXV3370 Account SIP Settings shows the SIP-specific settings on the GXV3370, such as SIP Transport protocol.

3. Go to the phone's Web UI > Phone Settings > General Settings, configure the STUN server to be the same as the one under UCM Web UI > Value-added Features > UCM RemoteConnect > Plan page.

Figure 7: GXV3370 Phone Settings General Settings details the general phone settings, including the STUN server configuration.

4. Go to the phone's web UI > System Settings > Security Setting > TLS page, configure "Minimum TLS Version" and "Maximum TLS Version" to be 1.2.

Figure 8: GXV3370 TLS Configuration shows the TLS security settings on the GXV3370, specifying TLS version compatibility.

Make Calls Using IP Phones

After configuring the IP phones with UCM RemoteConnect service, users can use the phone to make audio/video calls and join GS Wave audio/video conferences.

[Note] Presentation on end device IP Phones is currently not supported.

Below are the Grandstream devices that support RemoteConnect services with UCM6300 series:

• GXV3350/GXV3370/GXV3380
• GXP series
• GRP series
• WP820
• DP750
• GVC series