Chapter 4 – Configuring Your MultiVOIP
DID Parameters
The parameters applicable to the Direct Inward Dial (DID) telephony interface type are shown in the figure that follows and described in the table that follows. The
The DID interface allows one phone line to direct incoming calls to any one of several extensions without a switchboard operator. Of course, one DID line can handle only one call at a time. The parameters apply to the customer‐premises side of the DID connection (DID‐DPO, dial‐pulse originating). The network side of the DID connection (DID‐DPT, dial‐pulse terminating) is not supported.
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| DID Interface Parameter Definitions | |
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Field Name | Values |
| Description |
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Interface | DID‐DPO |
| Enables the customer‐premises side of DID functions |
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DID Options |
| MultiVOIP’s use of DID applies only for incoming DID calls. The Start Mode | |
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| used by the MultiVOIP must match that used by the originating telephony |
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| equipment; else DID calls cannot be completed. |
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Start Modes | Immediate Start, |
| For Immediate Start, the VOIP detects the off‐hook condition initiated by |
| Wink Start, |
| the telco central‐office call and becomes ready to receive dial digits |
| Delay Dial |
| immediately. |
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| For Wink Start, the VOIP detects the off‐hook condition. Then the VOIP |
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| reverses battery polarity for a specified time (140‐290 ms; a “wink”) and |
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| then becomes ready to receive dial digits. |
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| For Delay Dial, the VOIP detects the off‐hook condition. Then the VOIP |
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| reverses battery polarity for a specified time (reverse polarity duration has |
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| wider acceptable range than for Wink Start) and then becomes ready to |
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| receive dial digits. |
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Wink Timer | Integer values, |
| This is the length of the wink for Wink Start and Delay Dial signaling modes. |
(in ms) | in milliseconds |
| Applicable only when Start Mode parameter is set to “Wink Start” or “Delay |
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| Dial.” |
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Dialing Options |
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Inter Digit Timer | Integer values, |
| This is the length of time that the MultiVOIP waits between digits. When the |
| in seconds |
| time expires, the MultiVOIP looks in the phonebook for the number entered. |
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| Default = 2. |
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Message Waiting | ‐‐ |
| Not applicable to DID‐DPO interface. |
Indication |
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Inter‐Digit | Integer values, |
| This parameter is applicable when digits are dialed onto a DID‐DPO channel |
Regeneration Timer | in milliseconds |
| after the connection has been made. The length of time between the |
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| outputting of DTMF digits. |
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| Default = 100 ms. |
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56 | MultiVOIP® Voice/Fax over IP Gateways |
