-Voip Gateway-

UTG7104

UTG7104-224

 



UTG7104
 

Q02:What is the requirements to setup a VoIP network under existing LANs?
Q01: We want to setup VoIP direct solution for our offices in two different locations, what we need?  

Q02: What is the requirements to setup a VoIP network under existing LANs?

If For VoIP solutions, EUSSOs VoIP gateway works in the following requirements:
1. Two or more LANs (Ethernet 10/100Mbps) separated. Each gateway has a LAN port.
2. Each FXS port can be used to connect regular analog telephone set.
3. Each FXS port can be used to connect regular analog FAX machine.
4. Each FXO port can be used to connect CO line (Central Office line from telecomm carrier).
5. Each FXO port can be used to connect PBX external line (PBX OK, keyphone is not suitable).
6. For simple connection (less than 5 Gateway), "Dial Plan" can be setup into Gateway firmware/flash 
 
    memory for telephone line number configuration and management.
7. For large telephone network (more than 5 gateways), a software gatekeeper or 
    Ciscogatekeeper 
can be used for easier management and configuration to maintain telephone 
    numbers and
 locations dial plan.

8. Each telephone line (channel) need network bandwidth for voice communication:
    If choose G.711 protocol (without compression): each channel need 60~70Kbps bandwidth.
    If choose G.729 protocol (with 8:1 compression): each channel need 16~20Kbps bandwidth.
    If choose G.723 protocol (with 10:1 compression): each channel need 14Kbps bandwidth.
    Cisco VoIP Phone use G.729 protocol, for compatibility concern, G.729 is recommended.
    For limited bandwidth network (like ADSL, VSAT), G.723 is recommended.

9. VoIP Gateway works by converting user's analog telephone voice (through FXS port) into digital  
    signal and transmit packet into LAN port by TCP/IP protocol. The connected network (either 
    Ethernet LAN or wireless LAN) must open for TCP/IP port 1720.

10.Packet pass through traditional router between several LANs is no problem if the router has no 
  
    setting to block VoIP packets.

11.For users using NAT Router, if the Gateway installed on the private IP LAN side, it is recommended 
     to open DMZ port for that VoIP gateway to communicate with Internet counter side VoIP gateway.

12. For several LANs across internet, it is recommended each VoIP Gateway to be set with a public 
     real IP address (fixed IP). Because each VoIP gateway need to know where to dial from Internet.

13. EUSSO provides several models of VoIP gateway:

4-Port VoIP Gateway with build-in 1WAN+4LAN Router
UTG7104-224  4-port VoIP Gateway (2-FXS+2-FXO) + 4-port Router ( Desktop )
UTG7104-S4   4-FXS Ports VoIP Gateway for Telephone, and Fax Machine + 4-port Router ( Desktop )
UTG7104-O4   4-FXO Ports VoIP Gateway for PBX, PSTN Equipment + 4-port Router ( Desktop )

4-Port VoIP Gateway
UTG7104-22  4-port VoIP Gateway ( 2-FXS Ports + 2-FXO Ports ) (Desktop)
UTG7104-S   4-FXS Ports VoIP Gateway for Telephone, and Fax (Desktop)
UTG7104-O   4-FXO Ports VoIP Gateway for PBX, PSTN Equipment (Desktop)

8-Port VoIP Gateway
UTG7108-C   2-Slot Module Control Unit, host up to 8 Ports   ( 19" )
UTG7108-S   4-FXS Port Module for Telephone and Fax Machine, Used with UTG7108-C
UTG7108-O   4-FXO Port Module for PBX, PSTN Equipment, Used with UTG7108-C

VoIP gateway with router is for small office without Internet Broadband router.
4-port VoIP gateway desktop is for SME or branch office use.
8-Port VoIP gateway 19" rack mountable is for central office.
4-Port module FXO and FXS optional is for PBX or Telephone set connection choice.

For new customer installation under existing LANs, you must know its requirement and plan in detail, such as:

(1) What's the existing network TCP/IP setting? Private or public IP? Which point to Internet?
(2) What's the bandwidth allowed for Voice communication?
(3) How many telephone sets required at the head quarter?
(4) How many telephone sets required at each branch office?
(5) Are they use PBX, which brand and model? Will VoIP gateway connected through PBX?
(6) How much budget and what network grow planning they request?
     Then make a VoIP network plan for that requirement. 

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Q01: We want to setup VoIP direct solution for our offices in two different locations, 
            what we need?

If you use telephone set only, you need FXS port VoIP gateway (UTG7104-S).
If you use telephone PBX only, you need FXO port VoIP gateway (UTG7104-O).
If you use both telephone set and PBX, you need FXS and FXO port VoIP gateway (UTG7104-22).
The best way to use VoIP gateway is fixed IP for reliabel connection.
If using dynamic IP, you need to subscribe Dynamic DNS for domain name service.
Our VoIP gateway support both fixed IP and dynamic DNS setup.
Furthermore, if you are using NAT router, our gateway support behind NAT Router usage.        

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EUSSO Technologies, Inc. is a dedicated data communication and networking company. With professional experiences in design, production, marketing and service support, we deliver the full range networking products including Gigabit Ethernet, Fiber Optic, Wireless LAN, Switches, Hubs, LAN cards, PCMCIA adapters, Converter, Transceivers. As well as Internet Telephony Gateway, Print Servers, Broadband Router and many others.

Copyright EUSSO Technologies, Inc. 2003