--- title: "Grandstream UCM 6XXX" slug: "flowroute-grandstream-ucm-6xxx" updated: 2024-10-22T21:25:13Z published: 2024-10-22T21:25:13Z canonical: "support.bcmone.com/flowroute-grandstream-ucm-6xxx" --- > ## Documentation Index > Fetch the complete documentation index at: https://support.bcmone.com/llms.txt > Use this file to discover all available pages before exploring further. # Grandstream UCM 6XXX This guide explains how to register a SIP connection to a Grandstream UCM 6100+ (firmware 1.0.18+) with Flowroute, set up DIDs for E911 routing, set up international calling on a Flowroute account, and submit CNAM updates. ## **Registration** - Go to our Customer Portal and select the “**Interconnections**” menu on the left and then select the “**Registration**” tab to get the “**Username/Tech Prefix**” number and password. These are referred to as the “**SIP Credentials**” in our Portal. You will enter these into the Grandstream. - Access the Grandstream UCM user interface and click on VoIP Trunks, then click “**Add SIP Trunk**”. This will bring you to the display pictured below. ![A screenshot of a computer Description automatically generated](https://cdn.document360.io/505a9638-8582-4eef-8206-3c7a24d46a36/Images/Documentation/flowroute-grandstream-ucm-6xxx-image-39m5qbza.png?sv=2026-02-06&spr=https&st=2026-11-07T17%3A53%3A54Z&se=2026-11-07T18%3A53%3A54Z&sr=c&sp=r&sig=MaaSuK8S3VQyMGzqILEx%2F2lP0p4MSeaNpJUAxxXCW4g%3D) - Name the SIP Trunk whatever you like in the “**Provider Name**” field. - Enter your preferred Flowroute PoP as the “**Host Name**” and use Port 5060. You can view our POPs by navigating to Interconnections and then Registration in the Flowroute Customer Portal, or view the list at this link: [https://support.flowroute.com/523626-Interconnection-with-Flowroute-PoPs](https://support.flowroute.com/523626-Interconnection-with-Flowroute-PoPs) ![A screenshot of a computer Description automatically generated](https://cdn.document360.io/505a9638-8582-4eef-8206-3c7a24d46a36/Images/Documentation/flowroute-grandstream-ucm-6xxx-image-w54n3xru.png?sv=2026-02-06&spr=https&st=2026-11-07T17%3A53%3A54Z&se=2026-11-07T18%3A53%3A54Z&sr=c&sp=r&sig=MaaSuK8S3VQyMGzqILEx%2F2lP0p4MSeaNpJUAxxXCW4g%3D) - Check the boxes “**Need Registration**” and “**Allow outgoing calls if registration fails**”. - Enter the Flowroute “**Tech Prefix**” into the “**Username**” field. - Enter your password from the Flowroute “**SIP Credentials**” into the Grandstream “**Password**” field. - Enter the “**Tech Prefix**” into the “**AuthID**” field. ![](https://cdn.document360.io/505a9638-8582-4eef-8206-3c7a24d46a36/Images/Documentation/flowroute-grandstream-ucm-6xxx-image-3cpq3t8h.png?sv=2026-02-06&spr=https&st=2026-11-07T17%3A53%3A54Z&se=2026-11-07T18%3A53%3A54Z&sr=c&sp=r&sig=MaaSuK8S3VQyMGzqILEx%2F2lP0p4MSeaNpJUAxxXCW4g%3D) - Save the configuration and then navigate back into the Grandstream Trunk configuration settings to make several more changes. In the “**Basic Settings**” tab, enter the Flowroute POP you selected. - Click on the “**Advanced Settings**” tab and choose the PCMU (G.711) and G.729 audio codecs. - Change the “**DID Mode**” to “**Request-line**”. ![A screenshot of a computer Description automatically generated](https://cdn.document360.io/505a9638-8582-4eef-8206-3c7a24d46a36/Images/Documentation/flowroute-grandstream-ucm-6xxx-image-fanjtoqi.png?sv=2026-02-06&spr=https&st=2026-11-07T17%3A53%3A54Z&se=2026-11-07T18%3A53%3A54Z&sr=c&sp=r&sig=MaaSuK8S3VQyMGzqILEx%2F2lP0p4MSeaNpJUAxxXCW4g%3D) - If you have a NAT policy causing the contact header in the Register packet to display a Private IP, you will need to correct it to show a Public IP. In the Grandstream user interface, navigate to the “**PBX**” menu and choose “**SIP Settings**,” then click the NAT tab. Enter the Public IP into the “**External Host**” field and add your local network address for the device into the “**Local Network Address**” field. Save the changes to complete the Grandstream registration setup. ![A screenshot of a computer Description automatically generated](https://cdn.document360.io/505a9638-8582-4eef-8206-3c7a24d46a36/Images/Documentation/flowroute-grandstream-ucm-6xxx-image-kmo5m2jn.png?sv=2026-02-06&spr=https&st=2026-11-07T17%3A53%3A54Z&se=2026-11-07T18%3A53%3A54Z&sr=c&sp=r&sig=MaaSuK8S3VQyMGzqILEx%2F2lP0p4MSeaNpJUAxxXCW4g%3D) You can check the phone system registration status in the Flowroute Customer Portal “**Interconnections**” menu in the “**Status**” tab. ## **Dialing patterns** - Flowroute requires that you prepend a 1 for 10-digit dialing for outbound domestic US and Canada calling. - Strip the 011 in the dialing pattern for outbound international calls. - For 3-digit dialing, Flowroute supports 711, 911, 933, and 988. ## **E911 routing** Use the following method in the Customer Portal if you need to set up a number with E911 geolocation info for emergency responders. Navigate to DIDs, check the relevant DID, select “**Assign/Enter E911 Profile**” in the dropdown action menu above the DID table, and then confirm the action. Assign an existing address or add a new address on the following screen and confirm the order. ![](https://cdn.document360.io/505a9638-8582-4eef-8206-3c7a24d46a36/Images/Documentation/image(677).png?sv=2026-02-06&spr=https&st=2026-11-07T17%3A53%3A54Z&se=2026-11-07T18%3A53%3A54Z&sr=c&sp=r&sig=MaaSuK8S3VQyMGzqILEx%2F2lP0p4MSeaNpJUAxxXCW4g%3D) ![](https://cdn.document360.io/505a9638-8582-4eef-8206-3c7a24d46a36/Images/Documentation/image(671).png?sv=2026-02-06&spr=https&st=2026-11-07T17%3A53%3A54Z&se=2026-11-07T18%3A53%3A54Z&sr=c&sp=r&sig=MaaSuK8S3VQyMGzqILEx%2F2lP0p4MSeaNpJUAxxXCW4g%3D) ## **International calling** International dialing also needs to be enabled in the Customer Portal. Navigate to “**Preferences**” and then select the “**Fraud Control**” tab. There is a toggle for “**International Calling**” plus other international calling restriction options. ![](https://cdn.document360.io/505a9638-8582-4eef-8206-3c7a24d46a36/Images/Documentation/image(678).png?sv=2026-02-06&spr=https&st=2026-11-07T17%3A53%3A54Z&se=2026-11-07T18%3A53%3A54Z&sr=c&sp=r&sig=MaaSuK8S3VQyMGzqILEx%2F2lP0p4MSeaNpJUAxxXCW4g%3D) Flowroute charges per minute for international calling, so funds will also need to be added to the account balance for international usage. This is done by navigating to the “**Dashboard**” panel of the Customer Portal and then entering an amount into the Balance box and submitting by clicking “**Add Funds**.” The account balance is also displayed in the bottom-left corner of the Customer Portal UI at all times and can be expanded by clicking on it to quickly add funds. Below that is a redirect button to the “**Balance Management**” page which can also be manually navigated to via “**Preferences**” then clicking the “**Balance Management**” tab. This page logs the payment card on file, the option to set up low balance notifications, and automatic payments. ![](https://cdn.document360.io/505a9638-8582-4eef-8206-3c7a24d46a36/Images/Documentation/image(679).png?sv=2026-02-06&spr=https&st=2026-11-07T17%3A53%3A54Z&se=2026-11-07T18%3A53%3A54Z&sr=c&sp=r&sig=MaaSuK8S3VQyMGzqILEx%2F2lP0p4MSeaNpJUAxxXCW4g%3D) ![](https://cdn.document360.io/505a9638-8582-4eef-8206-3c7a24d46a36/Images/Documentation/image(680).png?sv=2026-02-06&spr=https&st=2026-11-07T17%3A53%3A54Z&se=2026-11-07T18%3A53%3A54Z&sr=c&sp=r&sig=MaaSuK8S3VQyMGzqILEx%2F2lP0p4MSeaNpJUAxxXCW4g%3D) ## **Setting CNAM** CNAM is set by navigating to “**DIDs**” and then checking the relevant number to apply the “**Set CNAM Storage Preset**” action. This loads another page which allows you to assign an existing CNAM value or create a new value. Once you complete the order, allow up to 5 days for the CNAM change to fully propagate. ![](https://cdn.document360.io/505a9638-8582-4eef-8206-3c7a24d46a36/Images/Documentation/image(681).png?sv=2026-02-06&spr=https&st=2026-11-07T17%3A53%3A54Z&se=2026-11-07T18%3A53%3A54Z&sr=c&sp=r&sig=MaaSuK8S3VQyMGzqILEx%2F2lP0p4MSeaNpJUAxxXCW4g%3D) ![](https://cdn.document360.io/505a9638-8582-4eef-8206-3c7a24d46a36/Images/Documentation/image(682).png?sv=2026-02-06&spr=https&st=2026-11-07T17%3A53%3A54Z&se=2026-11-07T18%3A53%3A54Z&sr=c&sp=r&sig=MaaSuK8S3VQyMGzqILEx%2F2lP0p4MSeaNpJUAxxXCW4g%3D)