Topic
This article discusses how to configure Grandstream GRP series phones to work with Cytracom UCaaS.
Environment
- Cytracom UCaaS
- Grandstream GRP Series
Description
Grandstream GRP series phones not purchased through Cytracom must be manually configured using the phone's local web interface and the SIP credentials from the Cytracom portal.
Procedure
Before you start
Before configuring the phone, open the extension that will be assigned to the device in Cytracom's portal, then click SIP Config under Routing & Configuration. Keep this page open so you can copy the SIP username and SIP password.
Make sure the phone is connected to the network and has received an IP address.
Access the web interface
1. Log into the local IP address of the phone using a web browser on the same network as the phone.
2. Log in using the phone's administrator credentials.
Note: If the administrator password is unknown, the phone may need to be factory reset before it can be configured.
Platform settings map
Use the table below to map the Cytracom SIP configuration fields to the Grandstream GRP web interface.
| Cytracom platform setting | Grandstream GRP web interface location | Grandstream field | Value to enter |
|---|---|---|---|
| SIP Server / Registration Server | Accounts > Account 1 > General Settings | SIP Server | reg.cmh1.uc.cytracom.net |
| Outbound Proxy | Accounts > Account 1 > General Settings | Outbound Proxy | reg.cmh1.uc.cytracom.net |
| SIP Username | Accounts > Account 1 > General Settings | SIP User ID | Enter the SIP username from the extension's SIP Config page. |
| SIP Username | Accounts > Account 1 > General Settings | Authenticate ID | Enter the same SIP username from the extension's SIP Config page. |
| SIP Password | Accounts > Account 1 > General Settings | Authenticate Password | Enter the SIP password from the extension's SIP Config page. |
| User / Extension Name | Accounts > Account 1 > General Settings | Name | Enter the user's name or desired display name. |
| Account Label | Accounts > Account 1 > General Settings | Account Name | Enter the user's name, extension, or desired account label. |
| Voicemail Access | Accounts > Account 1 > General Settings | Voice Mail UserID | Enter * followed by the extension number. For example, if the extension is 101, enter *101. |
| NAT Traversal | Accounts > Account 1 > Network Settings | NAT Traversal | Select Keep-Alive. |
Configure SIP registration
1. In the phone's web interface, navigate to Accounts > Account 1 > General Settings.
2. Enter the desired account label in the Account Name field.
3. Set SIP Server to reg.cmh1.uc.cytracom.net.
4. Set Outbound Proxy to reg.cmh1.uc.cytracom.net, if the field is available.
5. Enter the SIP username from the extension's SIP Config page in the SIP User ID field.
6. Enter the same SIP username in the Authenticate ID field.
7. Enter the SIP password from the extension's SIP Config page in the Authenticate Password field.
8. Enter the user's name or desired display name in the Name field.
9. Set Voice Mail UserID to * followed by the extension number. For example, if the extension is 101, enter *101.
10. Click Save and Apply.
Configure NAT traversal
1. Navigate to Accounts > Account 1 > Network Settings.
2. Set NAT Traversal to Keep-Alive.
3. Click Save and Apply.
Verify registration
After saving the configuration, the phone should register to Cytracom.
If the phone registers successfully, place a test call and confirm two-way audio.
If the phone does not register, verify the SIP username, SIP password, SIP Server, Outbound Proxy, NAT Traversal, and network connectivity.