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E1 Phonebook Configuration MultiVOIP User Guide
368
Site F calling Site D
A voip call from a Tavistock key extension to extension 3117 on the PBX in Inner
London.
A. The required entry in the Tavistock Outbound Phonebook to facilitate origination
of the call, would be “3”. The string 02073988 is added, preceding the “3”. The call
would be directed to the Inner London voip’s IP address, 200.2.9.9.
B. The corresponding entry in the Inner-London Inbound Phonebook to facilitate
completion of the call would be 020739883.
1. The caller in Tavistock picks up the phone receiver, presses a button on
the key phone set. This button has been assigned to a particular voip
channel.
2. The caller in Tavistock hears dial tone from the Tavistock voip.
3. The caller in Tavistock dials 02073983117.
4. The Tavistock voip sends the entire dialed string to the Inner-London voip
at IP address 200.2.9.9.
5. The Inner-London voip matches the called digits 02073983117to its
Inbound Phonebook entry “020739883, ” which it removes. Then it adds
back the “3” as a prefix.
6. The Inner-London PBX dials extension 3117 in the office in Inner
London.
Variations in PBX Characteristics
The exact dialing strings needed in the Outbound and Inbound Phonebooks of
the MVP3010 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 MVP3010 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 MVP3010
can be completely transparent to phone users within the company.