Issue Description Grandstream UCM returns status code -8 for certain actions such as getSystemStatus, addoutboundroute, listvoiptrunk...

Description When the Grandstream UCM's extension is configured with 'Call Forward Unconditional' with an external number (for eg. mobile...

Description During the telephony system implementation, the onsite engineers have to run a list of test cases to make sure the system is...

Issue GXP16XX phones are stuck at 'Recovery Incomplete' or 'Firmware Initialising" upon boot up. Cause The error is caused by power...

Call Flow Description: ATA responded with a 302 Moved Temporarily message with <sip:0730599000@sip01.dc5.vmvault.com.au> in the Contact...

Description This articles describes the hardware specifications of IPVT10 Server.

Background Many users find it difficult to capture the Syslog from the phone or gateway devices when the issues are intermittent and...

What is the GWN7000 supported OpenVPN version in Android? The GWN7000 OpenVPN is Ver. 2.3.6. Make sure that : 1. the key length of...

There is no restriction in setting the max. number of panelists in IPVideo Talk Webinar. However it is recommended to keep it to 300....

GWN.Cloud use these domain names and ports: gateway.gwn.cloud:443 api.gwn.cloud:443 www.gwn.cloud:443 syslog.gwn.cloud:1996...

Issue Description Line 1's account 1 is shown duplicating at the phone's LCD screen on model GXP16XX. Setting Navigate to Settings >...

If you are new to telephony networking and troubleshooting, this guide shows you step-by-step in setup and configuring the parameters to...

Introduction The UCM uses SMTP to send the email out and is set to smtp.gmail.com:587 Each time you make changes onto the Email Setting,...

Ghost calls will usually affect the phone level. You may find it annoying by getting authorized calls. You can increase the security on...

Unlike GXP21XX or GRP26XX phone models, there is no 'Secondary SIP Server' option under Account Setting in GXV33XX Android phones. The...

407 Proxy Authentication SIP message is a normal authentication challenge. It is sent from Service Provider to challenge the endpoints....

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