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E1 Phonebook Configuration MultiVOIP User Guide
366
Site D calling Site C
1. Dial 901189435632.
2. “9” gets outside line. On some PBXs, an “8” may be used to direct calls
to the VOIP, while “9” directs calls to the PSTN. However, some PBX
units can be programmed to identify the destination patterns of all calls
to be directed to the VOIP.
3. PBX at Site D is programmed to divert all calls made to the 118 area
code and exchange 943 into the VOIP network. (It would also be
possible to divert all calls to all phones in area code 118 into the VOIP
network, but it may not be desirable to do so.)
4. The MVP3010 removes the prefix “0118” and adds the prefix “101#”
for compatibility with the analog MultiVOIP’s phonebook scheme.
The “#” is a delimiter separating the analog VOIP’s phone number
from the digits that the analog VOIP must dial onto its local PSTN to
complete the call. The digits “101#9435632” are forwarded to the Site
B analog VOIP.
5. The call passes through the IP network (in this case, the Internet).
6. The call arrives at the Site B VOIP. This analog VOIP receives this
dialing string from the MVP3010: 101#9435632. The analog VOIP,
seeing the “101” prefix, uses its own channel #1 (an FXO port) to
connect the call to the PSTN. Then the analog VOIP dials its local
phone number 9435632 to complete the call.
NOTE: In the case of Reading, Berkshire,, England,
both “1189” and “1183” are considered local
area codes. This is, in a sense however, a
matter of terminology. It simply means that
numbers of the form 9xx-xxxx and
3xx-xxxx are both local calls for users at
other sites in the VOIP network.