0x2755 Low Layer Compatibility Layer 1 Info
(Interworking Only)
Used in:
0x0033 NPDI Universal ICB
Byte |
Description |
0, 1 |
Tag 0x2755 |
2, 3 |
Length Variable |
4, 5 |
Value[0] User information layer 1 protocol 0x01 CCITT standardized rate adaption V.110 [7] and X.30
0x02 Recommendation G.711 [10] Mu Law
0x03 Recommendation G.711 A-law
0x04 Recommendation G.721 [11] 32 K bits/s ADPCM and
0x05 Recommendations H.221 and H.242
0x07 Non CCITT standardized rate adaption.
0x08 CCITT standardized rate adaption V.120 [9].
0x09 CCITT standardized rate adaption X.31 [14] HDLC
All the other values are reserved. |
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Value[1] User Rate 0x00 Rate is indicated by E bits specified in 0x01 0.6 k bits/s Recommendations V.6 [16] and X.1 [17] 0x02 1.2 k bits/s Recommendation V.6 0x03 2.4 k bits/s Recommendations V.6 and X.1 0x04 3.6 k bits/s Recommendation V.6 0x05 4.8 k bits/s Recommendations V.6 and X.1 0x06 7.2 k bits/s Recommendation V.6 0x07 8 k bits/s Recommendations I.460 0x08 9.6 k bits/s Recommendations V.6 and X.1 0x09 14.4 k bits/s Recommendation V.6 0x0a 16 k bits/s Recommendations I.460 0x0b 19.2 k bits/s Recommendation V.6 0x0c 32 k bits/s Recommendations I.460 0x0e 48 k bits/s Recommendations V.6 and X.1 0x0f 56 k bits/s Recommendation V.6 0x10 64 k bits/s Recommendation X.1 0x15 0.1345 k bits/s Recommendation X.1 0x16 0.100 k bits/s Recommendation X.1 0x17 0.075/ 1.2 k bits/s Recommendations V.6 & X.1 0x18 1.2/0.075 k bits/s Recommendations V.6 & X.1 0x19 0.050 k bits/s Recommendations V.6 & X.1 0x1a 0.075 k bits/s Recommendations V.6 & X.1 0x1b 0.110 k bits/s Recommendations V.6 & X.1 0x1c 0.150 k bits/s Recommendations V.6 & X.1 0x1d 0.200 k bits/s Recommendations V.6 & X.1 0x1e 0.300 k bits/s Recommendations V.6 & X.1 0x1f 12 k bits/s Recommendations V.6
All the other values are reserved. |
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Value[2] Intermediate Rate 0x00 Not used 0x01 8 k bits/s 0x02 16 k bits/s 0x03 32 k bits/s All the other values are reserved. |
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Value[3] Physical properties
Negotiation Indicator: 0 In-band negotiation not possible. 1 In-band negotiation possible.
Network Independent Clock (NIC) on Transmit: 0 Not required to send data with network independent. 1 Required to send data with network independent clock.
Network Independent Clock (NIC) on Receive: 0 Cannot accept data with network independent clock 1 Can accept data with network independent clock
Flow Control on Transmit: 0 Not required to send data with flow control mechanism. 1 Required to send data with flow control mechanism.
Flow control on Receive: 0 Cannot accept data with flow control mechanism 1 Can accept data with flow control mechanism
Header / No Header: This provides rate adaption header/ no header information. 0 Rate adaption header not included. 1 Rate adaption header included.
Multiple Frame establishment support in data link: 0 Multiple frame establishments not supported. 1 Multiple frame establishments supported.
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Value[4] Physical Mode
Synchronous/ Asynchronous: 0 Synchronous data. 1 Asynchronous data.
Mode of operation: 0 Bit transparent mode of operation. 1 Protocol sensitive mode of operation.
Logical Link Identifier Negotiation: 0 Default LLI=256 only. 1 Full protocol negotiation.
Assignor/ Assignee: 0 Message originator is "default assignee". 1 Message originator is "assignor only".
In-band negotiation: 0 Negotiation is done with user information messages on 1 Negotiation is done in-band using logical link zero.
Duplex Mode: 0 Half Duplex. 1 Full Duplex.
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Value[5] Number of stop bits
0x00 Not used 0x01 1 bit 0x02 1.5 bits 0x03 2 bits
All the other values are reserved. |
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Value[6] Number of data bits
0x00 Not used 0x01 5 bit 0x02 7 bits 0x03 8 bits
All the other values are reserved. |
|
Value[7] Parity
0x00 Odd 0x02 Even 0x03 None 0x04 Forced to 0 0x05 Forced to 1
All the other values are reserved. |