Multi-Tech Systems MultiVOIPTM 用户手册

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A voip call from a Lincoln key extension to extension 3117 on the PBX in Pierre, South 
Dakota. 

A. The required entry in the Lincoln Outbound Phonebook to facilitate 

origination of the call, would be “31”.  The string “1615492” would have to be 

added as a prefix.   The call would be directed to the Pierre voip’s IP address, 

200.2.9.9. 
B. The corresponding entry in the Pierre Inbound Phonebook to facilitate 

completion of the call would be 1615492. 

1. Caller at Lincoln picks up phone receiver, presses button on key 

phone set.  This button has been assigned to a particular voip 

channel (any one of the three FXS ports). 

2. The caller at Lincoln hears dial tone from the Lincoln voip. 
3. The caller at Lincoln dials 3117. 
4. The Lincoln voip adds the prefix 1615492 and sends the entire 

dialing string, 16154923117, to the Pierre voip 

at IP address 200.2.9.9. 

5. The Pierre voip matches the called digits 16154923117 to its 

Inbound Phonebook entry “1615492” . 

6. The Pierre PBX dials extension 3117 in the office at Pierre. 
 

The exact dialing strings needed in the Outbound and Inbound 

Phonebooks of the MVP2410 will depend on the capabilities of the PBX.  

Some PBXs require trunk access codes (like an “8” or “9” to access an 

outside line or to access the VOIP network).  Other PBXs can 

automatically distinguish between intra-PBX calls, PSTN calls, and 

VOIP calls.   
Some PBX units can also insert digits automatically when they receive 

certain dialing strings from a phone station.  For example, a PBX may 

be programmable to insert automatically the three-digit VOIP identifier 

strings into calls to be directed to analog VOIPs.   
The MVP2410 offers complete flexibility for inter-operation with PBX 

units so that a coherent dialing scheme can be established to connect a 

company’s multiple sites together in a way that is convenient and 

intuitive for phone users.  When working together with modern PBX 

units, the presence of the MVP2410 can be completely transparent to 

phone users within the company.