Multi-Tech Systems MVPGSM-2 manual Sample Configurations, General Notes

Chapter 5: Phonebook Configuration

Sample Configurations

¾MVPGSM-to-MVPGSM

¾MVPGSM as a Stand Alone Unit

¾Analog VOIP and MVPGSM

¾Load Balancing

General Notes

Suppose you want to call a phone number outside of your building using a phone station that is an extension from your PBX system (if present). What digits must you dial? Often a “9” must be dialed to “get an outside line” through the PBX (i.e., to connect to the PSTN). Generally, “1 “or “11” or “0” must be dialed as a prefix for calls outside of the calling code area (long-distance calls, national calls, or international calls). For PBX units that have a trunk access code, it’s important to enter the trunk access code (often a “9”) in the “Remove Prefix” field in the Outbound Phonebook.

MVPGSM-to-MVPGSM

The basic setup would consist simply of two VOIPs able to communicate via IP address, with preset phone numbers entered into the Phone Book of each unit, with the Inbound Phone Book of one unit containing the exact same information as the Outbound Phone Book of the other unit and vice-versa. This is the underlying concept behind the Phone Books – they are the reverse of each other so that they match information to accomplish the connections. This is more applicable to analog VOIP units than the wireless, but it helps with understanding the purpose of the Phone Book sections.

Example 1: The Local VOIP has channel 1 populated with a SIM using the phone number 612-555-1234 and the Remote VOIP has 763-555-4321 as the phone number for the SIM on channel 1. By populating the Phone Book of each unit with the information from the other, calls can be changed as to appear local to the receiving unit. This is the most basic setup and illustrates the concept behind the Phone Book entries and standard VOIP operation. This direct connection then takes advantage of the wireless connection and the calls are not charged as long-distance.

Example 2: Multi-Tech VOIP units can also be set to Auto Call, in which case, either or both sides can be set to automatically dial the other VOIP (‘612-555-1234’ or ‘763-555-4321’) when a phone number matches the entry set to Auto Call, the MVPGSM will automatically dial the corresponding phone number of the other VOIP unit.

MVPGSM as a Standalone Unit

Operating as a standalone unit (that is, with no corresponding VOIP unit on the receiving end), the MVPGSM can be used as a SIP gateway to handle all long distance calls and any other call that would be less expensive if the connection is wireless. In this case, the phone system call control module (e.g. an IP PBX) would determine the nature of the call being placed and route it to the proper gateway. Incoming calls would be automatically routed to the voice mail system that would then provide options for the caller to select from, e.g. a voice menu system that informs the caller to press “0” for the operator or simply enter the digits of the extension they wish to reach.

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