Single Span E1 T1 PRI Expansion Board for S100 and S300 PBX. Supports up to 2 boards for the S100, and 3 boards for the S300.

The Yeastar EX08 is an expansion board for the S100 and S300 PBX products. It supports up to 4 optional modules/8 ports, including O2, S2, B2, GSM, UMTS, and CDMA modules.  ...

Additional Information: The Yeastar D30 is a DSP module used to expand the capacity of S-Series PBX. 1 pcs of D30 stands for 100 extensions and 30 concurrent calls. Compatibility:...

YEASTAR YST-O2-2 FXO Ports O2 Module, 2 FXO Ports

Call (650) 282-2885 for instant discount (and) with any Pre-Sales questions! We are a Yeastar sub-distributor (approved by Cherry) We are Asterisk Specialists and IP PBX Telephone System professionals! We...

8 FXO ports Fully compliant with SIP and IAX2 Flexible calling rules Superb voice compression with industry standard codecs Line echo cancellation for 8, 16, 32, 64 or 128 ms...

4 FXO ports Fully compliant with SIP and IAX2 Flexible calling rules Reliable fax performance with T.38 Provides high-quality voice compression with industry standard codec’s

Make sure this fits by entering your model number. S300 Advanced communication features to create effective business communication experience for small business, connecting to traditional lines, SIP Ext 300 by...

What's Included in this Package Base Unit: S100 Housing, FXS: 4 Ports, FXO: 4 Ports, GSM w Ant: 2 Channels and EX08: 2 Exp Board User Guide, Ethernet: 10/100/1000Mbps. Mounting:...

Description : eastar S50 VoIP phone system is a compact and full-featured IP-PBX for up to 50 users and 25 concurrent calls Features:  Up to 50 users and 25 concurrent...

We provide solutions for companies of any size from 1 to 1000 users with access to the advanced features at less expensive than traditional phone services, using best in class...