The Siemens HiPath 3550 V4.0-5.0 call center is Siemens' reliable and economical solution for small to medium-sized businesses that need a scalable system utilizing modern technologies and can operate both as a digital (TDM) center and as an IP system.

With the Siemens HiPath 3550 V4.0-5.0, you can have a combination of PSTN and ISDN BRI lines, support up to 24 TDM or 96 IP users, and take advantage of a plethora of features such as:

• Pre-answer system with the ability to select the desired extension or department
• Voicemail
• Central and Individual memories
• Caller ID on analog extensions
• Music on Hold
• Automatic alternative provider selection
• Door opening from the telephone device
• Connection to an external music source
• Connection to a DECT wireless communication system, etc.

Carrier

• 2 ISDN (4ch) on board. Expandable up to 16 Channels (max ISDN + PSTN)

Extensions

• 4 analog on board. Expandable up to 16
• 8 digital on board. Expandable up to 24
• Max analog + digital = 42