JPS6139647A - Signaling signal transmitting device - Google Patents

Abstract

PURPOSE:To transmit signaling signals on a frame defined for data transmission by transmitting signaling signals of a sound circuit by envelope frame signal form similar to data signals. CONSTITUTION:A sound signal converting section 9 that converts aural signals 10-1-10-j to PCM signals, a data signal converting section 4 that outputs data signals 5-1-5j as bearer signals of envelope frame form, a signaling converting section 2 that converts signaling signals 1-1-1-6 of sound signal to bearer signals of envelope frame form and outputs them are provided in the signal transmitting device and data signal and PCM sound signal are mixed and transmitted. The bearer signals outputted by the converting section 2 and converting section 4 are multiplexed by a data multiplexing section 7 and outputted as data multiplexed signals 8, and outputs of the converting section 7 and converting section 9 are multiplexed by a mixing multiplex converting section 13 and outputted as mixed multiplexed signals.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical field to which the invention pertains The present invention relates to a signaling system for transmitting a voice line signaling signal in a transmission device that multiplexes and transmits a mixture of low-speed data and voice signals over a high-speed digital line. The present invention relates to a signal transmission device.

As a method for multiplexing a conventional technology data signal into a digital O order signal of Ef4kb/s, for example, x-5 of the CCITT recommendation is used.
There is a zero multiplexing method. This is 2.4kb/s, 4.8
kb/s.

A low-speed data signal such as 9.8 kb/s is processed in units of 6 bits, and as shown in Figure 3, 1-bit frame bits (F) and status bits (S) are placed before and after the 6-bit data bits D1 to D6. Add (6+2) envelope frames and convert the envelope frames into 3.
This is a method of converting bearer signals to bearer speeds of 2 kb/s, 6.4 kb/s, or 12.8 kb/s, and multiplexing a plurality of bearer signals into a 64 kb/s digital signal.

On the other hand, it is well known that an audio signal is PCM encoded and transmitted as an 84 kb/s digital audio signal.

Therefore, when transmitting a mixture of audio signals and data signals, it is most common to match at 64 kb/s.

However, in order to transmit a signaling signal of an 84 kb/s PCM encoded audio signal, for example, PCM24
In this method, 24 64kb/s PCM-encoded digital audio signals are arranged into multi-frames at 1,544Mb/s, and 8-bit PGM per frame is created.
A so-called in-channel signaling method is adopted in which the least significant bit of the code is periodically bit-stailed and a signaling signal is superimposed thereon and transmitted. Also, PC: 11.2.048 with M30 method
A channel for transmitting signaling is defined in Mb/s, and a so-called out-channel signaling transmission method is adopted. In any of the above methods, a signaling frame is assembled for signaling transmission, and if it is to be transmitted in a mixed manner with data signals, it is necessary to assemble two frames, one for data and one for signaling. The drawback is that the maximum effective information transmission capacity is limited by the line speed due to the number of bits.

OBJECTS OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional drawbacks and to provide a signaling signal transmission device that can transmit a signaling signal in a frame defined for data transmission.

Structure of the Invention The signaling signal transmission device of the present invention transmits audio signals at 64
It consists of an audio signal converter that converts into a kb/s digital audio signal, and a 1-bit frame bit followed by 6-bit data bits and 1-bit status bit (6
+2) Envelope frame at 3.2 kb/s, B,
A data signal converter that outputs a bearer signal of 4 kb/s, 12.8 kb/s, etc., and data that multiplexes bearer signals output from a plurality of data signal converters and outputs a data multiplexed signal of 64 kb/s. A multiplex conversion unit, and a mixing multiplex conversion unit that multiplexes and outputs the outputs of one or more of the data multiplex conversion units and a plurality of the audio signal conversion units, and mixes and transmits the data signal and the digital audio signal. The transmission device includes a signaling converter that converts and outputs a 3.2 or 6.4 kb/s bearer signal in correspondence with the 6-bit data bits of the envelope frame from the 6-line signaling link signal of the audio signal. The output of the signaling converter is input to the data multiplex converter, and the data multiplex converter is configured to multiplex the outputs of the signaling converter and the data signal converter.

Embodiments of the Invention Next, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG. 2 is a block diagram showing details of the signaling conversion section of the above embodiment. That is, the audio signal 10-1-10-
The audio signal converter 9 converts each of j into a PGM signal of 64 kb/s, and the data signals 5-1 to 5-i are input, and 6 bits following the 1-bit frame bit F as shown in FIG. 3 are input. A (6+2) encoded lobe frame consisting of data bits D1 to D6 and 1 status bit S is constructed, and this is
, 12.8 kb/s, etc., and a (6+2) envelope by making the signaling signals for six lines of the audio signal 9 correspond to the six data bits of the envelope frame signal, respectively. Configure frame, 3.2 or El, 4 kb/s
a signaling converter 2 that converts and outputs the bearer signal;
a data multiplex converter 7 that multiplexes the bearer signals output from the signaling converter 2 and the data signal converter 4 and outputs it as a 64 kb/s data multiplex signal 8; and a data multiplex converter 7 and a plurality of audio signals. It includes a mixing/multiplexing converting section 13 that multiplexes and outputs the output of the converting section 9, and transmits a data signal and a PCM audio signal in a mixed manner. The signaling signal for each voice signal is transmitted by each data bit of the bearer signal 3 output from the signaling converter 2. The bearer signal 3 has the same format as the bearer signals 6-1 to 6-i output from the data signal converter 4, and the output of the signaling converter 2 and the output of the data signal converter 4 are combined by the data multiplex converter 7. fi4
It is easy to multiplex into a Kb/s digital signal.

FIG. 2 is a block diagram showing the configuration of the signaling converter 2. As shown in FIG. That is, the signaling signals 15-1-15-6 of the six audio lines are converted into level converters 16-1 to 16.
-6, it is converted into logic 1/bell and inputted to the input terminals D□ to D6 of the envelope conversion circuit 17. The envelope conversion circuit 17 generates an 8-bit signal consisting of a frame bit F, a 6-bit data signal corresponding to the signaling signals of the six lines, and a status bit S, using a control clock 18 supplied from an envelope assembly/disassembly clock generation circuit 20. The envelope frame is assembled and output as a bearer signal 18.

The envelope assembly/disassembly clock generation circuit 20 outputs control clocks 18 and 21 in response to a bearer speed control signal 22 supplied from the outside. When the sampling rate of the signaling signals 15-1-15-6 is 400Hz, the bearer rate of the bearer signal 18 is 3.2k.
Hz, and when the sampling rate of the signaling signals 15-1 to 15-6 is 800 Hz, the bearer signal rate is 6.4 KHz. The sampling rate of the signaling signal is determined by the distortion distribution of the signaling signal, and the bearer rate is also determined thereby. On the other hand, a similar bearer signal 24 from the other side outputted from the data multiplexing converter 7 is input to the shift register 23, and the shift register 23 is parallelized by the control clock 21 supplied from the envelope assembly/disassembly clock generation circuit 20. Output to. Each of the 6-bit data signals output from the shift register 23 is latched by a latch circuit 25, converted to a signal level by level conversion circuits 26-1 to 26-6, and output as signaling signals 27-1 to 27-6. .

In addition, in FIG. 1, the description of the receiving side circuit is omitted.

In this embodiment, 15 signaling signals for 6 lines are used.
-1 to 15-6 are converted to the same signal as the data signal in the (6+2) envelope frame format, and the data multiplex converter 7 transmits the multiplexed data in the same way as other low-speed data. When transmitting a mixture of signals and data signals, there are two types: one for data and one for signaling.
There is no need to assemble a Honjo frame, and the signaling signal of the voice line can be easily multiplexed and transmitted in the same manner as other low-speed data bearer signals.

Effects of the Invention As described above, in the present invention, the signaling signal of the voice line is transmitted in the (6+2) envelope frame signal format similar to the data signal, so that the signaling signal of the voice line and other low-speed This has the advantage that data signals can be multiplexed and transmitted by the same data multiplex converter.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a block diagram showing the configuration of a signaling conversion section of the above embodiment, and FIG. 3 is a block diagram of a (6+2) envelope frame. In the figure, 1-1 to 1-6: signaling signals, 2:
Signaling converter, 3.6-1 to 6-i, 18°24
: Bearer signal, 4: Data signal converter, 5-1 to 5-1
: data signal, 7: data multiplex converter, 8: data multiplex signal, 9: audio signal converter, 10-1 to 10-j:
Audio signal, 11-1 to 11-j: Digital audio signal,
13: Mixing multiplex converter, 14: Mixing multiplex signal, 15-
1 to 15-[1: Signaling signal, 16-1 to 1B-
8 two-level conversion circuit, 17: envelope conversion circuit, 1
9.21: Control clock, 20: Envelope assembly/disassembly clock generation circuit, 22: Bearer speed control signal, 23
: Shift register, 25: Latch circuit, 26-1 to 2 [
1-6 two-level conversion circuit, 27-1 to 27-6: signaling signal.

Claims (1)

[Claims] An audio signal converter that converts the audio signal into a 64kb/s digital audio signal, and 6 bits following the 1-bit frame bit.
A (6+2) envelope frame consisting of 1 bit data bit and 1 bit status bit is 3.2 kb.
/s, 6.4 kb/s, 12.8 kb/s, etc., and a data signal converter that outputs bearer signals of 64 kb/s, 6.4 kb/s, etc.
a data multiplex converter that outputs as a data multiplex signal of s, and a mixing multiplex converter that multiplexes and outputs the outputs of one or more of the data multiplex converters and a plurality of the audio signal converters; In a transmission device that transmits a mixture of digital audio signals and digital audio signals, the signaling signals for six lines of the audio signals are made to correspond to the six data bits of the envelope frame to 3.2 or 6.4K.
a signaling converter that converts and outputs a B/S bearer signal, inputs the output of the signaling converter to the data multiplex converter, and the data multiplex converter converts the signaling converter and the data signal converter. A signaling signal transmission device characterized in that it is configured to multiplex outputs.