The Grandstream GXP1620/GXP1625 IP phones are geared specifically for small to mid-sized businesses and feature effective and essential functionalities to create an easy-to-use experience for a user with light to medium call volume. Its focus on essential features and standard call support makes the GXP1620/25 a versatile and dependable phone.
Instructions for configuring your Grandstream GXP 1625
In this activity you will:
Ensure that your Telnyx Mission Command Portal is configured properly
Provision your number (Assign it to a SIP connection)
Create an IP connection on your Telnyx Mission Control Portal
Ensure your Grandstream device is running the latest firmware
RECOMMENDED: Enable TLS to encrypt your traffic
Setting up your Telnyx SIP portal account so you can make and receive calls:
Note: Video walkthrough for Grandstream GXP/Telnyx configuration coming soon. Check back as we update our docs.
1. Log into your Grandstream web UI
All the configuration you'll need to do will take place on the web UI, which acts as an interface between you and your Grandstream device. You can access the web UI via the device's IP address. We'll find that, then use it to log in.
The IP address used to access the web UI depends on where the user’s computer is connected.
If the computer is connected to the same switch/router that the UCM6200 series WAN port is connected, then browse to the IP address that is displayed on the UCM6200 series LCD. This address is the WAN IP.
If the computer is connected to the LAN side of the UCM6200 series, then users would browse to the default IP of the UCM6200 series which is 192.168.2.1.
If connected successfully, the UCM6200 series login page. Out of the box, your device will have the following default credentials:
2. Create a SIP trunk
In this section, we're going to create a new SIP trunk that will connect your Grandstream device with your Telnyx account.
From the top navigation, select Accounts.
From here, select Accounts 1, then General Settings in left-hand navigation.
Provide the following information to configure this account.
Now select Network Settings from Accounts 1 in left-hand navigation and provide the following:
DNS Mode: A Record
NAT Traversal: Keep-Alive
Next, select SIP Settings > Basic Settings from Accounts 1 in left-hand navigation and make sure the following are set according to your encryption/transport settings in your Telnyx Mission Control Portal:
3. Configure codec preferences
In this section, you'll select the codecs you'll use for audio calling.
Select Audio Settings from Accounts 1 in left-hand navigation to set your codec preferences. You can choose any Telnyx-supported audio codecs:
That's it, you've now completed the configuration of your Grandstream and can now make and receive calls by using Telnyx as your SIP provider!
1. Outgoing call issues
Are you able to receive incoming calls but outgoing calls are failing with a No response error? Try this:
Login into your device's settings and head to Accounts > Account X > SIP > Custom SIP Header and disable the following:
Use X-Grandstream-PBX Header
Use P-Access-Network-Info Header
Use P-Emergency-Info Header
Go to Accounts > Account X > SIP > Audio Settings, and choose codec G729A/B as preferred Vocoder and the rest with PCMU.
Review our getting started with guide to make sure your Telnyx Mission Control Portal account is set up correctly.
Additionally, you can check out: