Grandstream GXW-4248
Grandstream GXW-4248 VoIP Analog ประสิทธิภาพสูงตามมาตรฐาน SIP ทำงานร่วมกันได้ทั้งระบบ VoIP,PBX Analog และโทรศัพท์ทั่วไป มีความยืดหยุ่นและมีความปลอดภัยสูง เหมาะสำหรับธุรกิจขนาดเล็กและขนาดกลาง โดยเฉพาะระบบไฮบริดที่ทำงานได้ทั้ง VoIPและ PBX Analog
Grandstream GXW-4248 product Features :
- 48 telephone FXS ports with both RJ11 and 50-pin Telco connectors, as well as per port LED
- A single 10/100/1000Mbps auto-sensing RJ45 port
- 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
Grandstream GXW-4224 Product Specifications :
- Telephone Interfaces: 2 x 50-pin Telco connectors
- Network Interfaces: 1 x 10M/100M/1000Mbps auto-sensing RJ45 port
- LED Indicators: LAN Link, LAN Activity, Connection per Telephone Port
- LCD Display: Backlit 128×32 graphic LCD display with support for multiple languages
- Voice-over-Pack Capabilities: G.168 carrier grade line echo cancellation, dynamic jitter buffer, modem detection & auto-switch to G.711
- Voice Compression: G.711, G.723, G.726, G.729 A/B, iLBC
- Fax over IP: T.38 compliant Group 3 Fax Relay up to 14.4kbps and auto-switch to G.711 for Fax Pass-through, Fax Datapump V.17, V.21, V27ter, V29 for T.38 fax relay
- Telephony Features: Caller ID display or block, call waiting, blind or attended transfer, call forward, do not disturb, 3-way conference, last call return, paging, message waiting indicator LED (NEON LED) support and
- QoS: DiffServ, TOS, 802.1P/Q VLAN tagging
- DTMF Method: Flexible DTMF transmission methods including In-audio, RFC2833, and /or SIP INFO
- SIP Server Profiles & Acocunts Per System: 4 distinct SIP server profiles per system and independent SIP account per telephone port
- Provisioning: TFTP, HTTP, HTTPS, TR069
