Unable to call out External Numbers in Scheduled Meeting in Grandstream IP PBX

Invite External Numbers in Schedules Meeting

Issue Grandstream IP PBX UCM does not call the invitees with external numbers, but it works with extensions during the scheduled meeting. How to UCM calls out using the Meeting Room Number during the scheduled meeting. Make sure that you enter the _x. or _meeting_room_number under Outbound Routes > Source Caller ID Pattern

Configure Remote PMS Wakeup Call in Grandstream IP PBX UC

Grandstream UCM on how to Configure Remote PMS Wakeup Call

Description A wake-up call refers to a service provided by hotels or accommodations to wake up guests at a specific time as per their request. It is a feature commonly found in hospitality management software or PMS (Property Management System) platforms. Wake-up calls are often used by guests who have early morning commitments or need … Read more

Grandstream FXO Gateway GXW410X does not disconnect calls

Grandstream FXO Gateway GXW410X does not disconnect calls

Description This article describes the call disconnection issue in Grandstream FXO Gateway GXW410X and the steps to capture the logs for troubleshooting. Most of the time, we have seen that FXO Gateway does not detect busy tones correctly causing the calls to hang up. Case 1 :If there are no busy tones heard over the … Read more

HA Configuration Network Topology in Grandstream IP PBX UCM

Network Topology HA in switch mode Grandstream IP PBX UCM

Description Starting 1.0.23.x, Grandstream IP PBX UCM supports High Availability (HA) in Route mode. This article describes an example network diagram of HA in Route and Switch mode. HA in Route Mode The full user guide can be found under HA Configuration Using “Route” Mode section. The steps describe the topology below: HA in Switch … Read more

Grandstream IP PBX UCM Data Partition is Full

Grandstream IP PBX UCM Full Data Partition

Description This article describes the best practices to free up the data partition in Grandstream IP PBX UCM to avoid abnormal behaviors such as call drops, delays, and slow performance. The UCM62XX or UCM6510 series has a config partition of only 200MB while the UCM630X series has a 500MB config partition. The data partition is … Read more

Grandstream Wave Mobile Application – Account Registration Failed

Grandstream Wave Mobile Account Registration Failed

Description When Grandstream IP PBX UCM63XX is used in remote work without Remote Connect service (UCMRC), there are certain network settings required to allow Grandstream Wave Mobile application login via UCM’s Public IP addresses; otherwise, you will get login errors such as ‘Account Registration Failed’ or ‘Unable to connect to the server’. Configure the ports … Read more

Grandstream IP PBX UCM – Completion Request / Busy Camp-On

Grandstream Call Completion Busy Camp on

Description This article illustrates the scenario when the caller requests Call Completion when called party is busy with Grandstream IP PBX UCM6XXX. You may refer to the complete guide here. By default, when the Call Waiting feature is disabled at the Extensions and IP Phones, the Call Completion request works only on unanswered or timeout … Read more

Do we have a way to pass through DODs between Two Grandstream IP PBX UCMs?

Grandstream DOD and DID TATA Trunks

Scenario/Test Steps 1. ISP (TATA) VoIP trunk has 100 DIDs and DODs. Configure the SIP Register trunk in UCM A. The SIP Trunk number (pilot number) is 68010200. 2. UCM A and UCM B are connected via Peer Trunk. Keep Trunk CID, Keep Original CID, and Caller ID disabled in Peer Trunks. 3. UCM B has … Read more

Understanding PPI mode: DOD Number when Call Forward to External Number

Description This article explains P-Preferred-Identity (PPI) Header in UCM’s INVITE message when UCM forwards the call from the extension to an external or mobile number. Test Steps Configure a VoIP Trunk Go to Advanced Setting and enable Send PPI Header and set PPI Mode to ‘DOD Number’ Configure DOD number: ddd9955 and DOD Name: DDD9955 at … Read more

Forward Original Caller ID in Grandstream IP PBX UCM

Grandstream Forward Original Caller ID

Description Call forward makes the remote working solutions more efficient and ensures continuity of business operation. This article describes the settings required to allow the forwarding of the original Caller ID of external numbers in Grandstream IP PBX UCM. 1. Make sure that the UCM has the latest firmware version 2. Make sure the following¬†settings … Read more