1
Scope
2 Reference
3 Terms and definitions
4 Abbreviations
5 DCME frame structure
5.1 General
5.1.1 Supported services
5.1.2 PCM frame
5.1.3 DCME frame and subframe
5.1.4 DCME multiframe
5.1.5 Relationship between the frames
6 Trunk interface structure
6.1 Type of trunk interface
6.2 Number of trunk interfaces, trunk channels
6.3 Type of trunk channels
7 Bearer interface structure
7.1 Cliques, destinations and bearers
7.1.1 Number of cliques
7.1.2 Number of destinations
7.1.3 Multiple outgoing bearers
7.2 Assignment message
7.3 Bearer Channels (BC)
7.4 Control Channel (CC)
7.5 BC numbering and the use of the
bearer frame
7.5.1 8 bit (64 kbit/s transparent calls) BCs
7.5.2 5 bit (VBD optimized 40 kbit/s LD-CELP) BCs
7.5.3 4 bit BCs (bit bank, fax bank)
7.5.4 2 bit (16 kbit/s ADPCM for SS No. 5 tone) BCs
7.5.5 Normal range 1 bit BCs (CS-ACELP voice)
7.5.6 Overload BCs
7.5.7 Pre-assigned BCs
8 Control channel
8.1 General
8.2 Number of assignment messages
8.2.1 BCC/ECC criterion
8.2.2 Total number of assignment
messages
8.3 Control channel content
8.3.1 CC synchronization
8.3.2 Assignment messages
8.3.3 Asynchronous data word
8.3.4 Error
correction
8.4 CC message transmission scheme
8.4.1 Control channel structure
8.4.2 CC bit mapping
9
Low bit-rate codecs
9.1 Variable bit rate and overload channel creation
9.1.1 Principles
9.1.2 Overload channel creation
9.2 Codec to support SS No. 5 tone signals
9.3 Frame alignment between the different types of codecs
9.4 Processing delay compensation
between the different types of codecs
9.5 Synchronous
reset between encoder and corresponding decoder
10 Channel check procedure
11 Facsimile demodulation/remodulation
12 System statistics measurement