WellGate M4
4-Port 3G SIP IP Gateway

WellGate M4_3G rear view


  • 3G and GSM mixed over SIP VoIP Gateway
  • Flexible Routes Plan, Dial Plan, Digit Manipulation
  • Support up to 4 SIP Trunk
  • Support different SIP Trunk to each GSM or 3G line
  • Auto HTTP Provision feature
  • Dual IP Stack : IPv6 and IPv4 Simultaneously



WellGate M4 is an 4-SIM GoIP 3G or GSM SIP gateway which allows
to connect 4 Lines of GSM/3G with GSM or 3G (base station).
This device is suitable for office IP-PBX application at office to
office or office to branch office to call between PSTN Line and IP
Call. Or, connect to IP Telephony SIP Service provider from/to
3G/GSM mobile network.

To select up to 4 SIP TRUNK Accounts

WellGate M4 is appropriate to use four VoIP SIP Trunk or IP Centrex service or IP-PBX
within offices and remote branch offices. One of four SIP Servers ( or ITSP Service provider
or alternative IP-PBX ) can be configured freely at each line ( FXO port ) to make or receive
IP Call. It provides 4 service platforms according to your dial number or routes plan.

3G and GSM wireless mobile phone is popular than fixed land line

Some places have difficulty and expensive to deploy fixed land line. Therefore, they
consider to install 3G or GSM base SIP gateway rather than FXO land line gateway. There are
several advantages to install 3G/GSM SIP IP gateway. For instance, they are quick installation,
not any PSTN line lock issue after call, accurate answer and drop time, and can be moved
to any desire place easily.

Flexible Dial plan and Route Plan Features

WellGate M4 provides flexible Dial Plan between 3G/GSM and IP Trunk (SIP Soft Switch).
Dial Plan is to configure in what condition the digits can be sent out to/from IP network.
The dialing inter-digit time before dialing is configurable to meet local 3G/GSM line.
Dial Rule is able to detect the prefix code and maximum digits reached and then dial
automatically. The Digit Manipulation (DM) allows you to configure matched prefix code,
digits length, start and stop digit position to be replaced digits as well.

Route Plan is to configure the incoming and outgoing call routes which you desired this call
to go out or allow to income. For instance, IP incoming call may reach one 3G/GSM line with
Priority or Cyclic access. You can also configure IP incoming call by Matched prefix digits,
matched dialing number to 3G/GSM line and Matched digit length. For 3G/GSM outgoing call to IP
routes, the hunting type supports Priority or Cyclic or Simultaneously to select which SIP
trunk ( SIP Proxy Server ) to go. 3G/GSM outgoing call routes also support by Matched prefix
digits, Matched outgoing SIP Trunk number and Matched digit length. Both direction supports
No Answer time out and Backup Routes.

Suit to IP-PBX to access local GSM Line

WellGate M4 is a SIP IP device to connect with IP-PBX to access local 3G/GSM network. Its
telephony features, for instance, Caller ID number and accurate call establish/drop time
indication, are easy to integrate with Legend Telephony Line with IP-PBX in office and branch
office IP call application. It is compatible with local Telecom network regulation and your office
IP network to transmit analog voice between them.



  • Interface:
    • Ethernet port (RJ-45, 10/100 base-T)
    • 1-WAN port, connect to IP Network
    • 1-LAN port connect to local network
    • Support Bridge, NAT and management mode
    • Telephony port connect to local 3G/GSM lines (4-SIM cards)
    • DC +12V power input Jack
    • LED Indicator for WAN/LAN, System and GSM, SIM card status
  • IP Network connection
    • IPv4 (RFC 791) and IPv6 Simultaneously
    • IPv6 Auto Configuration (RFC 4862)
    • IPv6 Only, IPv4 Only or dual stack
    • MAC Address (IEEE 802.3)
    • MAC Clone Setting
    • Vendor Class ID
    • Static IP
    • DHCP Client (RFC 2131) for WAN port
    • DHCP client IP range configure
    • DHCP Server for LAN port
    • NAT Server (RFC 1631)
    • PPPoE Client
    • DDNS ( DynDNS )
    • DNS Client
    • Firewall
    • URL Filter
    • IP Filter
    • MAC Address Filter
    • Application program Filter
    • Port Filter
    • Port Forwarding (TCP, UDP or both)
    • Bandwidth Control (Download and Upload), Maximum Bandwidth
      priority setting
    • UPnP Server at LAN port
    • Behind NAT, use DMZ for NAT traversal
    • NTP with time zone (GMT) and Daylight Saving
    • TCP/UDP (RFC 793/768)
    • RTP/RTCP (RFC 1889/1890)
    • IPV4 ICMP (RFC 792),
    • TFTP Client
    • VoIP VLAN Support 802.1Q, 802.1P
    • VLAN ID Range : 2 to 4094
    • VLAN Priority : 0 to 7 (Highest Priority)
    • QoS : DiffServ (RFC 2475), TOS (RFC791, 1394)
  • SIP Protocol :
    • RFC3261 compliance
    • SIP UDP Protocol
    • Support SIP compact Form
    • Support SIP HOLD Type: Send Only, or Inactive
    • SIP Session Timer (RFC 4028) configure
    • Configure SIP local Port to avoid from hacking
    • Accept Proxy Only: YES(avoid hacking) or NO (P2P call)
    • SIP QoS Type: DiffServ or TOS
    • SIP T1, T2, and T3 time configure in msec configure
    • Invite Linger Timer (msec) configure
    • General Linger Timer (msec) configure
    • Cancel General No Response Timer(msec) configure
    • General Request Timeout Timer(msec) configure
    • Cancel Invite No Response Timer(msec) configure
    • Provisional Timer(msec) configure
    • First Response Timer (msec) configure
    • Line Congestion code configure
    • SIP Session Refresher: UAC or UAS
    • SIP Encryption
    • MD5 Digest Authentication (RFC2069/RFC2617)RFC3261 compliance
    • PRACK (RFC3262): Supported or Require
  • SIP Trunk :
    • Provide 4 SIP Trunks to register to remote devices
    • SIP Trunk register Type: Register or Predefine
    • Register Domain name or IP address.
    • Proxy Server and Outbound proxy server IP address configure
    • Proxy Server and Outbound proxy server port number configure
    • Register Expired time configure
    • Register TEL Number, User ID, Password and display name
    • Reject Anonymous Call from SIP Trunk
    • Outgoing Caller ID: Display Name and User ID
    • Keep Alive disable or enable (Time configure in second)
  • Audio Codec :
    • G.711 A-law/μ-law, G.729A, GSMFR, G.723.1(6.3K, 5.3K)
    • Select voice codec priority: According to Local or Remote
    • Voice Payload size (ms) configuration
    • Silence Suppression
    • VAD/CNG
    • RTP Basic Port configuration
    • RTP QoS Type : DiffServ or TOS
    • DTMF Relay: In-band, RFC2833/Fall back to SIP INFO, SIP INFO,
    • RFC2833/Fall back to In-Band
    • Packet Loss Compensation
    • Automatic Gain Control
    • Adaptive/Configurable Jitter Buffer
    • G.168 Acoustic Echo Cancellation
    • Configure RTP basic Port
    • Phone Book (100 records) for P2P calls
    • Dialing Plan with drop, replace, Insert dialing digits
    • Support Specified Line Calling.
  • Call Features :
    • Up to 4-ports connect to 3G/GSM BTS simultaneously
    • Caller ID recognition
    • Tone Generation: Ring Back, Dial, Busy, call waiting, ROH,
      Warning, Holding, Stutter dial tone and disconnect tone
    • Configure Tone Frequency, Cadence, Level and Cycle
    • Select Tone specification by Country name List
    • Global Country Based Tone Specification
    • Voice NAT Traversal:
      STUN(Type 1,2),
      STUN (All), enter STUN Server IP address
    • Behind NAT (enter IP sharing address)
    • Out-Band DTMF : RFC2833 and SIP Info
    • RFC2833 Payload type: disable, 101 or 96
    • DTMF send out ON and OFF Time configure
    • DTMF Detect Minimum ON Time(msec) configure
    • DTMF Detect Minimum OFF Time(msec) configure
    • DTMF Relay Volume configuration
    • Minimum Jitter Buffer(msec) configure
    • Maximum Jitter Buffer(msec) configure
    • Max Echo Tail Length (G.168): 32, 64 and 128ms
    • Keep Alive disable or enable (Time configure in second)
    • Jitter Optimizer Factor configure
    • Call Hold
    • Call Transfer
  • GSM Ports Interface: :
    • Activate or deactivate
    • GSM Phone number configuration
    • GSM Call services: Dial, Answer and Hang up.
    • Send and Recevie SMS messages for Prepaid in quiry
    • Audio Control: Echo Suppression, Noise Suppression,
      Side Tone and Gain Control.
    • GSM Quad Bands 850/900/1800/1900 MHz,
    • Operate on any GSM network to provide voice calls over IP
    • Offer 4 SIM cards Connection (Bin SIM card)
    • Detachable External Antenna:
      Impedance: 50 ohms
      Antenna Gain:  0.025dBi at 900Mhz,
      2.478dBi at 1800Mhz.
      Tx Power:        2 Watts at 850/900 MHz
                            1 Watt at 1800/1900 MHz
      Rx Sensitivity: -108dBm at 850/900 MHz
                            -107dBm at 1800/1900 MHz
  • 3G Ports Interface: :
    • Activate or deactivate
    • 3G Phone number configuration
    • 3G Call services: Dial, Answer and Hang up.
    • Send and Recevie SMS messages for Prepaid in quiry
    • Audio Control: Echo Suppression, Noise Suppression,
      Side Tone and Gain Control.
    • 3G Bands 850/900/1800/1900 MHz,
    • Operate on any 3G network to provide voice calls over IP
    • Offer up 4 SIM cards Connection (Micro SIM card)
    • Detachable External Antenna:
      Impedance: 50 ohms
      Antenna Gain:  0.025dBi at 900Mhz,
      2.478dBi at 1800Mhz.
      Tx Power:        2 Watts at 850/900 MHz
                            1 Watt at 1800/1900 MHz
      Rx Sensitivity: -108dBm at 850/900 MHz
                            -107dBm at 1800/1900 MHz
    • Play voice file to GSM incoming call
    • Repeat playing voice file counts to caller at GSM
      Self-recorded voice files to upload
    • Input(Encode) and Output(Decode) Gain configure in dB
    • Enter PIN Code of GSM SIM card
    • Enter PUK code to Unlock GSM SIM card.
    • Limit accumulated GSM outgoing call times
      (Call Time Quota in seconds)
    • Display accumulated GSM outgoing call times up to now
      (Total Cal Time in seconds)
    • Clear accumulated GSM outgoing call times
    • Reset each GSM Module to activate GSM Line
    • Incoming call HOT Line to desired SIP Trunk number
      Or 2-Stage dial to play greeting file.
  • Routing Plan:
    • Configure incoming Type: from 3G/GSM or VOIP(SIP Trunk)
    • GSM Default Route
    • 3G Default
    • VOIP Default Route
    • Matched Incoming Prefix code
    • Define matched individual 3G or GSM Line incoming List
    • Match Incoming digit length
    • Configure incoming 3G/GSM/VOIP to outgoing VOIP/GSM
    • Define not answer incoming call timeout in second
      Primary Route:
      Outgoing routing Type: 3G or GSM or VOIP
      Hunting Type(select one 3G/GSM line or Trunk ID to call):
      Priority, Cyclic or Simultaneously
      Routing List to show available 3G/GSM Line or SIP Trunk
      Hunting Cycle: to choose 1, 2 or 3 cycles
      DM Group: select which DM group to dial out                    
      Backup Route:
      Backup route plan once Primary Route failed.
      Activate or Inactivate backup Route plan
      Provide same feature as Primary route
  • Dial Plans:
    • Select Inter digit timeout duration ((default: 5 sec)
    • Start dialing by End of Digit key (default: # key)
    • Waiting time out of first digit to dial
    • Matched prefix code and max digits length to dial immediately
    • Phone Book (Max 100 records limitation)
    • Phone Book can be Exported or Imported
    • Phone Book used to make P2P call
  • Digit Manipulation (Drop and Replace Rule) :
    • 3G/GSM incoming call DM Group
    • VoIP SIP Trunk incoming call DM Group
    • Backup four DM group configuration:
      DM 1 Group
      DM 2 Group
      DM 3 Group
      DM 4 Group
    • Matched Prefix
    • Matched digit length
    • Replace from digit start position until stop digit position
    • Replace number to configure
    • Tone Generation: Ring Back, Dial, Busy, call waiting, ROH,
      WAN/LAN, IPv6 IP address, and Firmware version.
    • Line Status: 3G/GSM call status, Not connected reason, RSSI 3G/GSM
      signal strength, IMEI number (3G/GSM module),
      IMSI(SIM card number) and Remaining call time.
    • SIP Trunk Status: Account number, register status and concurrent
      calls number
    • Refresh status interval time.
    • Maintenance: Backup configuration, Restore configuration, Restore
      Auto provision file, Reset to default, Warm reset and Reboot.
    • Firmware update from Webpage.
    • Administrative Telnet, HTTP, and HTTPS
    • Telnet/HTTPS Service Access limitation from WAN port
    • Configure Service ports at HTTP, HTTPS and Telnet Services
    • Enable or Disable HTTP/HTTPS access service
    • HTTP auto provision through MAC address
    • HTTP Server IP/DNS address, ID/password and refresh interval
    • Multilingual Web User Interface
    • 3 Levels of User Access Authority with Password protection at
      different Web Language (Administrator, Supervisor and User)
    • Phone Debug Manager: Device Control, Call Control, DB, Verbose
    • SIP Debug Manager: Register, Call, SIP Message, Others
    • SNTP Debug Module
    • Device Debug Module
    • DSP Debug
    • Provide 8 Debug Levels:
    • Provides debug Syslog from desire date/time period
    • Syslog send to external SYSLOG Server and port
    • Event notice from Syslog Server and port number configure
    • Status display: Network, Line, SIP Trunk status
    • Diagnostics (debug through Syslog Event Notice)
    • Debug in real time by Telnet
    • SNMP agent V2/Trap
    • Configuration Backup/Restore
    • Dual Firmware Image Backup
  • Environmental :
    • Physical Dimension: 19-inch chassis, 1U high, 11 CM depth
    • Weight:  2.1kg (One unit with packing)
    • Operating Temp. & Humidity
      • Temp.: 0°C~45°C (32°F~113°F)
      • Humidity: 10%~90% relative humidity, non-condensing
    • Power Adaptor:
      • INPUT: AC100V~240V, 50/60Hz
      • OUTPUT: DC 12V, 3A
      • Maximum Power Consumption: 15 Watts (1.3A at 12Vdc)
  • Country of origin:
    • Made in Taiwan
  • Packing Accessories
    • WellGate M4         x 1 pcs
    • AC to DC+12V/3A Power adaptor    x 1 pcs
    • Antenna                                         x 4 pcs
    • 19-inch Relay Rack mounting bracket  x 2 pcs
  • Warranty
    • One year



Copyright © 2015. WELLTECH TECHNOLOGY CO., LTD. All Rights Reserved.