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ITU-T H.248.42

Gateway control protocol: DCME interworking package

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Organization: ITU-T
Publication Date: 1 March 2009
Status: active
Page Count: 28
scope:

The DCME Package is used for interfacing digital circuit multiplication equipment (DCME). DCME types are for instance, defined by [b-ITU-T G.763], [b-ITU-T G.767] or [b-ITU-T G.768]. There is a signalling interface defined between DCME and a so-called "international switching centre" (ISC). [ITU-T Q.50] defines such an interface. The DCME Package scopes DCME with Q.50 interfaces (see Figure 1).

NOTE 1 - Relation to PCME [b-ITU-T G.765]: the DCME package may be applied in principle as well for PCME types with Q.50-based CME signalling and E1/PDH trunk interface types. The final decision is still for further studies, e.g., due to dependencies with the still open clause 19 of [b-ITU-T G.765] on dynamic load control.

NOTE 2 - Relation to IP-CME [b-ITU-T G.769]: the DCME package may be applied for IP-CME types with Q.50-based CME signalling and E1/PDH trunk interface types. Other trunk facilities are for further study.

The DCME Package must support DCME-ISC signalling interface functions. The required Package capabilities may be summarized by the following overview from [b-ITU-T G.763] and [ITU-T Q.50]. There are three major groups of functions:

Transmission resource management

Facilitates the dynamic load control process within the ISC and the DCME concurrently, based on the status of the traffic loading on the DCME system.

• Seizure/release of 64 kbit/s circuits

Used in the DCME for the generation of internal assignment and disconnection messages and in the ISCs for the validation of circuit seizure selection/release based on acknowledgement from the DCME.

• Maintenance information

Facilitates information exchange between the DCME and the ISCs pertaining to the maintenance status. Maintenance status information may be exchanged between the DCME and the ISC.

Document History

ITU-T H.248.42
March 1, 2009
Gateway control protocol: DCME interworking package
The DCME Package is used for interfacing digital circuit multiplication equipment (DCME). DCME types are for instance, defined by [b-ITU-T G.763], [b-ITU-T G.767] or [b-ITU-T G.768]. There is a...
October 31, 2006
Gateway control protocol: DCME interworking package
A description is not available for this item.
May 20, 2006
Gateway control protocol: DCME interworking package
A description is not available for this item.

References

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