OfficeSIP Messenger 2.2.5 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The program is included in Communication Tools.
The common filenames for the program's installer are Messenger.exe or _E86794A3CDBFBA60ADAA68.exe etc. We recommend checking the downloaded files with any free antivirus. The most popular versions of the program 2.2, 2.1 and 2.0. The latest version of the program can be installed on PCs running Windows XP/Vista/7/8/10/11, 32-bit. This free program is a product of OfficeSIP Communications.
From the developer:
OfficeSIP Messenger provides enterprises with advanced instant communications for free. Compatible with Office Communications Server 2007, OfficeSIP Messenger delivers reliable performance combined with trouble-free deployment and management. OfficeSIP Messenger is based on industry-standard libraries used by Microsoft Office Communicator.
You may want to check out more software, such as OfficeSIP Alerter, OfficeSIP Server or Y!Hook Messenger, which might be similar to OfficeSIP Messenger.
Texting & Video calls
Texting & Video calls