GXW4216/24/32 x RJ11 FXS ports plus & 1/1/2 x 50 pin Telco connectors GXW4248: 2 50 pin Telco connectors, Gigabit Ethernet and a backlit 128?32 graphic display with support for multiple languages
4 SIP Server profiles per system and independent SIP account per port Supported voice/Fax codecs include G.711, G.723.1, G.726A/B, iLBC, T.38 Fax
Advanced carrier grade 128ms-tail-length G.168 line echo cancellation Over-voltage and over-current protection(ITU-T, K.21)
Support VMWI, NEON LED and stutter tone for message waiting indication Automated provisioning using TR-069 or AES encrypted XML configuration file; TLS/SRTP/HTTPS for advanced security and privacy protection