V5 Protocol: Multi-Links

The V5.2 protocol specifies use of 1 to 16 links. The management of the links is included in the following standard: ETSI ETS300 347-1

The purpose of this document is to provide information about the options supported by Clarinet simulation.

E1 interfaces

By selecting V5x type in the profile, Clarinet allows management of a V5.2 interface: the 'Multi-clarinet" indication corresponds to a group of 1 to 6 Clarinet units, each of them corresponding to an E1 interface.

The SHIFT and CTRL keys allow selection of the group.

Links

Each E1 interface corresponds to a V5.2 LINK. A link ID is allocated to each of them in the panel.

C-Channels

The number of physical C-channels is specified by entering the value in the field. Each Clarinet E1 interface supports up to 2 physical C channels. The panel is automatically updated to display the list of physical C-Channels as specified in the standard (all the TS16's and then all the TS15's).

The logical C-channels are specified by the value of the Logical ID. If no value is specified, the C-channel is in STANDBY state. If a value is specified, it is in ACTIVE state

The V5.2 standard includes the following definitions:

  • Primary Link: the 2048 kbits/s Link in a multi-link V5.2 interface whose physical C-channel in TS 16 carries a C-path for the protection protocol and on V5.2 initialization, also the C-path for the control protocol, link control protocol, and the BCC protocol. Other C-paths may also be carried in the same TS16

  • Secondary Link: the 2048 kbits/s Link in a multi-link V5.2 interface whose physical C-channel in TS 16 carries a C-path for the protection protocol and on V5.2 initialization, acts as the standby C-channel for the control protocol, link control protocol, and the BCC protocol.

The C-paths are allocated to the logical C-channel. The allocation of the C-path complies with the specifications of ETS300347-1 paragraph 18 and figure 25.


Definition of Clarinet features relating to the V5.2 standard:

  • Primary Link: the E1 interface of the first Clarinet defined in the 'Multi-Clarinet' set

  • Secondary Link: the E1 interface of the second Clarinet defined in the 'Multi-Clarinet' set

  • Group 1: TS16 of Primary + Secondary Links

  • Group 2: all other TS's.

  • Protection protocol: Carried in TS16 of Primary Link and TS16 of Secondary Link.

  • Control protocol, link control protocol, and the BCC protocol: at the initialization carried in TS16 of Primary Link.

  • PSTN or ISDN C-paths: they can be initialized in any logical C-channel either in Group 1 or Group 2.

 

 

 

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