Grandstream Android Phone GXV32XX is not responsive when receiving incoming calls

Grandstream GXV32XX is not responsive in answering calls

Description This article describes Grandstream Android Phone GXV32XX as being not responsive when receiving incoming calls. The users are unable to answer or pick up calls from the LCD call screen. This scenario is seen after UCM firmware upgrade. Workaround Please try one of these methods: a. Go to UCM63XX’s WEB UI > Extension > Media  > … Read more

Grandstream GRP260X: Does IP Call need a SIP account?

Grandstream GRP260X direct IP Calls

Description This article describes how IP calls work in Grandstream GRP260X. According to the developers, a SIP account is required to register onto phones in order to run the SIP stack for the IP calls. The receiving endpoints need to disable the Use Random Ports option. The default SIP Port for IP calls is 5060. … Read more

Call Drop With Grandstream GXV3350 And Fanvil SIP Indoor Station

Description There is a call drop issue that involves Fanvil Indoor Station and Grandstream GXV3350 registered through UCM63XX. Missed calls are shown on the Fanvil SIP Indoor Station. However, a call goes through if it is dialed from GXV3240. Analysis We manage to capture the packets from UCM and analyze both good and bad calls … Read more

How to recover the admin password for Grandstream IP PBX UCM

How to recover the admin password for Grandstream IP PBX UCM

Description This article describes how to recover the admin password of UCM. When the user forgets the Web UI admin password, you can : a. click the ‘Forget Password‘ button (as shown in Figure 1) the password will be sent to the user binding Email (under Maintenance > User Management). You are encouraged to configure … Read more