Specifications

Redirecting to a Different Call Agent Reference Manual (MGCP/NCS Version)

Mediatrix 4100

Redirecting to a Different Call Agent

The Mediatrix 4100 is provisioned with information for the initial registration sequence to a call agent – either

by the unit’s own provisioning tool or DHCP. However, the call agent may change the registration request

during the registration sequence to another call agent.

Upon receipt of a message that specifies a change in the registration request, the Mediatrix 4100 overwrites

its provisioned value with the new value and begins sending messages to the new call agent until a new

“NotifiedEntity” parameter is received OR until the Mediatrix 4100 is reprovisioned due to a restart.

Meter Pulse

A meter pulse allows to calculate call charges by providing a series of charging “pulses” on a customer’s line.

Typically, all pulses cost the same. However, the farther you call, the quicker the pulses come. This enables

customers to track the cost of their calls or to charge a call to a third party.

This feature is currently located under the mediatrixExperimental branch of the MIB structure. See “MIB

Structure” on page 33 for more details.

In the case of some private pay phones, the pulses enable customers to set the frequency at which the pay

phone user must insert cash to pay for a call.

The meter pulse feature is sent at 2.5 volts. The actual number of pulses sent is call agent-driven.

 To set the meter pulse feature:

1. In the fxsMeterPulseMIB, locate the fxsMeterPulseMIBObjects group.

2. Set the meter pulse frequency in the fxsMeterPulseFreq variable.

The meter pulse may use one of the following frequencies:

• freq_12_kHz(1)

• freq_16_kHz(2)

The selected frequency applies to all FXS lines.

3. Set the meter pulse duration in the fxsMeterPulseDuration variable.

This is the pulse duration (voltage is ON) in ms. The clock precision is 10 ms, i.e. you can request

213 ms, but the system will play each pulse 213 +/- 10 ms. Available values are from 120 ms to 220

ms.

Since this variable is located in a table, you can set its value on a per-line basis.

4. Set the meter pause duration in the fxsMeterPauseDuration variable.

This is the pause duration (voltage is OFF) in ms. The clock precision is 10 ms, i.e. you can request

327 ms, but the system will pause for 327 +/- 10 ms. Available values are from 100 ms to 600 ms.

Since this variable is located in a table, you can set its value on a per-line basis.

5. Restart the Mediatrix 4100 so that the changes may take effect.

MGCP Conference Mode

This mode enables the mixing of two RTP streams on a given endpoint, resulting in a conference call. The

conference is in the G.711, codec and it is initiated by a flash hook.

In conference mode, audio signals received in data packets through connections are replicated to all the other

connections whose mode is “conference.”