Variations in pbx characteristics – Multi-Tech Systems MVP210-SS User Manual

Page 240

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T1 Phonebook Configuration

MultiVOIP User Guide

240

Site F calling Site D

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.

Variations in PBX Characteristics

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.

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