Description The Grandstream HA100 is a high availability IP PBX solution designed for small to medium-sized businesses. It allows for the creation of a redundant system with two Grandstream PBX UCM6510 that can automatically switch over to a secondary system in case of a primary system failure. It also supports automatic failover for SIP trunks … Read more
Description This article describes the behavior when Grandstream Analog Telephone Adapter (ATA) is set in Bridge mode. When the ATA HT8XX series is configured in Bridge mode, the devices connected to its LAN port will behave similarly to any devices connected to a switch; they will obtain the IP addresses from the DHCP server and … Read more
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
Description Ghost calls will usually affect the phone level. You may find it annoying by getting authorized calls. You can increase the security on the affected phone by setting the following parameter to YES in Grandstream IP Phones – GXP16XX/17XX/21XX and HT8XX ATAs models. Validate Incoming Messages Check SIP User ID for Incoming INVITE Accept … Read more
Description Upgrading the product to the latest firmware version allows the expiration date of Grandstream authorized certificates to be adjusted automatically. Even with the certificate expired, the communication between the phones and clients might not be secure or fully encrypted but the device will still function as normal. Downloads
Description This article describes the call flow of Attended Transfer initiated by Grandstream GXP2135. VoIP packets and the phone’s Syslog messages will be discussed in this article. Call Flow a. Ext. 1001 dials Ext. 1007 b. Ext. 1007 puts the call on hold with ext. 1001 by pressing the Attn Transfer button on the Call … Read more
Description This article shows the example settings of DNS SRV Mode in Grandstream IP Phones.
More details: Grandstream Help Center
Description This article describes the configuration parameters in the GRP26XX series’s LDAP phonebook with Bicom Systems. How to The parameters below are required when configuring LDAP Phonebook: Server Address Port Base Username Password LDAP Number Filter LDAP Name Filter LDAP Name Attributes LDAP Number Attributes LDAP Display Name