Configuring EXNET Connect

Overview

You can configure EXNET using the EXS API messages as described below. You can also use the Converged Services Administrator (CSA). Refer to the Converged Services Administrator User’s Guide.

Sending API Messages

1. Send the Assign Logical Node ID message (0x10), using the last four digits of the serial number (which must be converted to hexadecimal) of the EXNET Connect card as the basis for the physical node ID. See Assigning Physical Node IDs for more information.

2. Send the EXS Node Configure message (0x7F) to set the H.100 clock master and H.100 clock speed.

Important! You must first assign the H.100 clock master before you configure any H.100 resource.

3. Send the EXNET Ring Configure message (0x74) with entity Assign Ring (0x01) to assign the logical ring ID.

4. Send the EXNET Ring Configure message (0x74) with entity Configure Number of Packets (0x03) to set the number of packets to be transmitted on the ring.

Important! The number of packets should be set to 1 for the PCI H.100 EXNET Connect in the SCSA compatibility mode. For the full H.100 mode the number of packets should be set to 4.

5. Send the EXNET Ring Configure message (0x74) with entity Configure Transmit Mode (0x02) to set the EXNET Connect to transmit mode.

6. Send the EXNET Ring Configure message (0x74) with entity Ring Mode (0x0A) to set the EXNET Connect to Enhanced Fault Tolerance Ring (EFTR) mode.

7. Send the Assign Logical Span ID message (0xA8) to assign spans to physical span offsets on the PCI H.100 card.

8. Bring the spans and channels into service.

9. Bring the EXNET ring into service.

Important! An CSP node ring configuration for all other non-EXNET Connect nodes on the ring must be performed before ring configuration of the EXNET Connect node, to avoid bandwidth fragmentation.

Assigning Logical Node IDs

You assign a logical node ID to the PCI H.100 card just as you would with the CSP nodes on the EXNET ring.

Assign a Logical Node ID (0-31) to each card, using the Assign Logical Node ID message. All nodes on the same Ethernet segment must have a unique Logical Node ID and each Physical Node ID must have one Logical Node ID. If a node ID is already assigned, the Assign Logical Node ID message receives a negative acknowledgment (NACK).

Important! The Logical Node ID must be in the range of (0x00–0x1F).

Assigning Physical Node IDs

Because the PCI H.100 is a card within a PC chassis instead of an CSP, you assign the physical node ID by performing the following:

1. Use the serial number of the card for the last four digits.

2. Set the two most significant bytes to 0x0001.

Example: If the serial number of the PCI H.100 card was 0x03AD, in the Assign Logical Node ID message (0x10) you define the value of the Physical Node ID field as 0x000103AD
(which is 0x03AD ORd with 0x10000).

Setting Up EXNET Connect on the Ring

The PCI H.100 card appears as a normal CSP node on the ring; however, it cannot become the ring master. Therefore, you must have at least one other CSP on the ring to act as the ring master.

Configuring the Clock Master

You configure the EXNET Connect like any other CSP node by sending the EXS Node Configure message (0x7F). This message allows the host to make the following two assignments:

• Number of channels per span on the H.100 bus

• H.100 clock mastership

You can configure any voice processing resource card, including EXNET Connect, as the H.100 clock master. You can configure the system to assign EXNET Connect as the clock master should the current master fail.

Making a Connection

One-way Connection

To create a one-way connection to a voice processing resource, the host must send an Outseize Control message to the EXNET Connect span/channel. This span/channel must be associated with the voice processing resource timeslot span/channel that is assigned to a physical offset on the H.100 bus.

To create the connection, send a Connect One-Way Forced message (0x50) to another CSP node. In the message, designate the EXNET Connect channel as Channel B and the channel on the other node as Channel A.

Two-way Connection

To create a two-way connection between a channel on an CSP node and a voice processing resource, send a Connect message (0x00) to the CSP node. In the message, designate the CSP node channel as Channel A and the EXNET Connect channel as Channel B.

Sending a Connect message allows the channel on the CSP node to receive data from the voice processing resource and data from the CSP node to be transmitted on the H.100 bus timeslot associated with the logical span and channel assigned to the EXNET Connect.