500 SIP users, 60 concurrent calls

Netlink PBX500 is a new generation of large-capacity unified communication. Based on the powerful hardware platform, it supports 500 extensions and 60 concurrent calls which is an integrated voice, video, paging, fax, conference, recording and other useful functions. It also provides four slots that are able to install E1/T1 boards, FXS, and FXO boards by hot-plug mode, so that they can be flexibly configured and combined according to the actual use scenarios. It is not only suitable for helping to build the telephony system of medium-sized enterprises also can meet the branch office needs of enterprises and government agencies, helping enterprises and industry customers to establish a convenient and efficient IP telephone system.


In addition, PBX500 provides an intuitive and easy-to-use graphical interface to facilitate user management and maintenance. With the open API, uses can easily integrate with the third-party system of CRM and dispatching platform, providing convenient and intelligent one-stop telephony solutions for enterprises.


What is Hosted PBX? | Sarvosys

Key Features


  • Supports up to 500 SIP users and 60 concurrent calls
  • Supports E1/T1, FXO and FXS ports with the flexible and alternative capability
  • Distributed multi-core CPU, greatly improves the call processing capacity
  • Flexible dial rules based on time, number or source IP
  • Supports Multi-level IVR, helps to build personalized voice navigation for enterprise
  • Built-in VPN server/client
  • Support voicemail/ Voice recording
  • User-friendly web interface, classification of web user’s rights


Toky: Business Phone System & Integrated VoIP Service

Full VoIP Features

  • Call waiting
  • Call transfer
  • Voicemail
  • Call queue
  • Ring group
  • Paging
  • Voicemail to Email
  • Event report
  • Conference Call




Physical Interfaces


  • 2* MCU Boards
  • 2* User board Slots, E1/T1, FXS, FXO boards optional
  • FXS Board: 2* RJ45 with 8 FXS
  • FXO Board: 2* RJ45 with 8 FXO
  • E1/T1 Board: 2* E1/T1 Ports

MCU Board

  • 2*100/1000M, Base-T, RJ45
  • 1* USB 2.0
  • 1* Console port


  • Connector: RJ45
  • Caller ID: Bellcore Type 1&2, ETSI, BT, NTT and DTMF
  • Answer and Disconnect Signaling: Answer, Disconnect, Busy Tone Polarity Reversal
  • Hook Flash


Connector: RJ45

Caller ID: FSK, DTMF

  • Polarity Reversal Answer Delay Detection of Busy Tone Detection of No Current
  • Auto Match of FXO Impedance


  • 2* E1/T1 Ports at max Interface: RJ48 (120Ohm) ISDN PRI:
  • 23B+D(T1),30B+D(E1), NT or TE ITU-T Q.921, ITU-T Q.931, Q.Sig
  • Signal 7/SS7:

Voice Capabilities

  • VoIP Protocols: SIP over UDP/TCP/TLS,RTP/SRTP
  • Codecs: G.711, G.723.1, G.729A/B, G.722, G.726, OPUS
  • Silence Suppression
  • Comfort Noise Generator(CNG) Voice Activity Detection (VAD)
  • Echo Cancellation: G.168 with up to 128ms Dynamic Jitter Buffer
  • Adjustable Gain Control Automatic Gain Control (AGC)
  • Call Progress Tones: Dial Tone, Ring Back
  • Tone, Busy Tone
  • FAX: T.38 and Pass-through NAT: STUN/UPnP
  • DTMF: RFC2833/Signal/Inband VPN Server/Client


  • Web GUI Configuration Telnet Management Configuration Restore/Backup
  • Multiple Languages Supported HTTP/TFTP/FTP Firmware Upgrade Auto Provision
  • Syslog
  • Ping and Tracert
  • Traffic Statistics: TCP, UDP, RTP Network Capture
  • NTP
  • Classification of Web Users’ Rights HTTP&HTTPS/NATS API

PBX Services

  • Call Forward (Unconditional/No Answer/Busy)
  • Call Waiting Call Holding Call Transfer Hotline
  • Do-not-disturb
  • 3-Way Conference Ring Group
  • Call Queue Routing Groups
  • Caller/Called Number Manipulation Routing Based on Time Period
  • Routing Based on Caller/Called Prefixes Routing Based on Source Trunks
  • Dial Rules Failover Routing Multi-level IVR
  • Auto-attendant Function CDRs
  • Voicemail
  • Voice Recording
  • Up to 1000 SIP Extensions Up to 200 Concurrent Calls Paging
  • Event Report Email Client Voicemail to Email


  • 1+1 Power Supply, 100-240VAC, 50-60 Hz
  • Power Consumption: 50W
  • Operating Temperature. 0 ℃ ~ 45 ℃
  • Storage Temperature: -20 ℃ ~80 ℃
  • Humidity: 10%-90% non-Condensing
  • Dimensions (W/D/H): 437×345×49mm
  • Unit Weight: 5.7 kg