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Configuring V5.2

Overview

This section describes how to configure the V5.2 protocol.

All configuration for V5.2 is based on logical V5 IDs. The host uses these logical IDs to manage the physical V5 interfaces in the CSP node. The host manages the configuration of V5 IDs, links, C Channels, logical span IDs, and user ports. V5 IDs contain associated links, C Channels, and user ports. Each V5 ID can contain up to 16 logical link IDs. These link IDs carry all C Channels and voice data. Links are configured per V5 ID, and can exist with or without C Channels.

C Channels are configured per V5 ID, to timeslot 16 on a link. C Channels carry the signaling messages and framing information between two nodes in the V5 network. The host configures a group of user ports for each V5 ID. These user ports are the actual subscribers in the network. Once the valid configuration is complete, the host can bring each V5 interface into service.

The V5 Configure API message handles most of the V5 configuration. All queries are configurable using the V5 Configuration Query message. When you configure the V5.2 card, the first API message sent to the switch must be the V5 Configure message, which creates the V5 interface. The V5 Configure message must contain a Slot Address Information Block (AIB) and a V5 Create Tag/Length/Value (TLV) block. Then the data portion of the V5 Create TLV block contains the V5 ID, and all subsequent configuration and call processing messages address the newly-created V5 ID.

Important! The V5 ID is not the same as the "Interface ID" defined in the ITU-T and ETSI recommendations for V5.2. It is a unique number used by the switch to address the V5 signaling arrangement.

The following entities are required to use the V5.2 protocol in the CSP:

V5 IDs

V5 IDs are the logical representation of physical V5 interfaces. The host creates, configures, and destroys V5 IDs. The host can configure a maximum of 16 V5 IDs per CSP node.

Links

The host can configure a maximum of 16 links per V5 ID.

C Channels

Two C Channels are allowed for each V5 ID.

User Ports

Each ISDN Series 3 card can accommodate a maximum of 10,000 user ports, and a single V5 ID can be configured to use all 10,000 ports.

Logical Span IDs

When adding links to a V5 ID, each Logical Span ID is associated with a Link ID. One link corresponds to one Logical Span ID. The same Logical Span ID cannot be used for more than one V5 interface.

Configuration Sequence

The table below shows a typical sequence for configuring the CSP for V5.2. For more information, see the V5 Configure message in the API Reference. See the Appendix for a sample configuration trace.

Important! In Step 4, the V5 ID Address Type (AIB) is used to configure all of the options on the V5. The options in step 4 can be performed with a single V5 Configure message, using the V5 ID AIB.

Table 10-1 Typical Sequence Configuring CSP for V5.2

Step | Action | API Message
--- | --- | ---
1 | Assign Logical Span IDs to the physical E1 spans | Assign Logical Span ID (0xA8)
2 | Format the E1 spans to clear channel | E1 Span Configure (0xD8)
3 | Create V5 IDs (using Slot AIB) | V5 Configure (0x7B)
4 | Configure V5 Options (using V5 ID AIB): V5 Interface ID Variant ID Variant Type Network Side (LE) | V5 Configure (0x7B)
5 | Add user port ranges to each V5 ID (using V5 ID AIB) | V5 Configure (0x7B)
6 | Add links to each V5 ID (using V5 ID AIB) | V5 Configure (0x7B)
7 | Add C Channels to each V5 ID (using V5 ID AIB)* | V5 Configure (0x7B)
8 | Bring spans into service | Service State Configure (0x0A)
9 | Bring V5 IDs into service | Service State Configure (0x0A)

*Protection Group 1 is supported for the C Channel type. The physical channel is timeslot 16. Protection Group 2 is not supported.

Important! When V5.2 is configured, the time taken before the newly activated matrix can process calls is longer than with non-V5.2 protocols running. The time taken will be dependent on the details of the V5.2 configuration.

AIB. A standardized block that allows address data to be inserted in a standard way into API messages.
See Address Information Block.
Tag-Length-Value block. A standardized block that allows data to inserted in a standard way into API messages.
International Telecommunications Union (UN)
European Telecommunications Standards Institute
See Integrated Services Digital Network.
Range of channels provided by T1 or E1 transmission service. A physical span is a group of channels taking up a single physical wire. A logical span is a group of channels taking up less than a single logical wire, or carried over more than one physical wire.
A digital communications link - voice, data, and video at a 2.048 Mbps rate; 30B/2D or 31B/1D (ISDN); non-North American version of T1.
The condition of a component at a given instant. The current "context" of a PPL object, such as Idle, Seizing, Answered. In PPL files, a State is represented by a circle.