The Grandstream GXW4504 Digital VoIP Gateway features 4 T1/E1/J1 span and supports 120 concurrent calls.
- Dual Gigabit autosensing RJ45 network ports with integrated NAT router
- TLS and SRTP security encryption technology to protect calls and accounts
- Automated provisioning by HTTP/TFTP with XML config files
- Software configurable E1/T1/ J1 ports, support PRI, SS7, MFC R2
- Supports a widerange of voice codecs, including G.722, G.729, iLBC, and more
- Supports T.38 Fax for creating Faxover-IP
- Supports multilanguage voice promtps