Some more output...
from isdndecode -u 9 -i -o -x (the TE interface)
=========== isdndecode controller #9 ========== started Thu Jul 19 19:39:34 2007
-- NT->TE - unit:09 frame:000011 - time:19.07 19:39:40.244656 - length:45 ----
L2 00 02 000000-- SAPI = 0 (Call Control)
------1- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 FF 1111111- TEI = 127 = 0x7f (Broadcast TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 03 000-0011 U-Frame: UI (Unnumbered Information)
---0---- P/F, Poll = No Immediate Response Required
L3 03 08 00001000 Protocol = Q.931/I.451/DSS1 (0x08)
L3 04 01 0000---- Call Reference
----0001 Call Reference length is 1 byte
L3 05 47 0------- Call Reference is sent from call originator
-1000111 Call Reference = 71 = 0x47
L3 06 05 0------- Message type extension = 0
-0000101 Message type = SETUP (0x05)
L3 07 04 0------- Variable length Information element
-0000100 IE = bearer capability
L3 08 03 00000011 IE Length = 3 bytes
L3 09 80 1------- Extension Bit = 1 (no extension, final octet)
-00----- Coding standard = CCITT
---00000 Capability = 0x00, speech
L3 0A 90 1------- Extension Bit = 1 (no extension, final octet)
-00----- Mode = 0x00, circuit
---10000 Rate = 0x10, 64 kbit/s
L3 0B A3 1------- Extension Bit = 1 (no extension, final octet)
-01----- Layer 1 identity = 1
---00011 Layer 1 Protocol = 0x03, G.711 a-Law
L3 0C 18 0------- Variable length Information element
-0011000 IE = channel identification
L3 0D 01 00000001 IE Length = 1 bytes
L3 0E 89 1------- Extension Bit = 1 (no extension, final octet)
-0------ Interface Id present = No
--0----- Interface Type = BRI
---0---- Spare
----1--- Channel is exclusive
-----0-- Channel is not the D-Channel
------01 Channel = B-1
L3 0F 28 0------- Variable length Information element
-0101000 IE = display
L3 10 09 00001001 IE Length = 9 bytes
L3 display = COMfortel
L3 1A 6C 0------- Variable length Information element
-1101100 IE = calling party number
L3 1B 06 00000110 IE Length = 6 bytes
L3 1C 41 0------- Extension Bit = 0 (with extension, octet follows)
-100---- Type = Subscriber number
----0001 Plan = ISDN (E.164) (0x1)
L3 1D 80 1------- Extension Bit = 1 (no extension, final octet)
-00----- Presentation = allowed
---000-- Spare
------00 Screening = user provided, not screened
L3 1E 32 00110010 Number digit = 2
L3 1F 36 00110110 Number digit = 6
L3 20 30 00110000 Number digit = 0
L3 21 30 00110000 Number digit = 0
L3 22 70 0------- Variable length Information element
-1110000 IE = called party number
L3 23 05 00000101 IE Length = 5 bytes
L3 24 81 1------- Extension Bit = 1 (no extension, final octet)
-000---- Type = Unknown
----0001 Plan = ISDN (E.164) (0x1)
L3 25 32 00110010 Number digit = 2
L3 26 36 00110110 Number digit = 6
L3 27 30 00110000 Number digit = 0
L3 28 31 00110001 Number digit = 1
L3 29 7D 0------- Variable length Information element
-1111101 IE = high layer compatibility
L3 2A 02 00000010 IE Length = 2 bytes
L3 2B 91 1------- Extension Bit = 1 (no extension, final octet)
-00----- Coding standard = CCITT
---100-- Interpretation = first
------01 Presentation = High layer protocol profile
L3 2C 81 1------- Extension Bit = 1 (no extension, final octet)
-0000001 Characteristics = Telephony (0x01)
-- TE->NT - unit:09 frame:000012 - time:19.07 19:39:40.245013 - length:8 -----
L2 00 FC 111111-- SAPI = 63 (Layer 2 Management)
------0- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 FF 1111111- TEI = 127 = 0x7f (Broadcast TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 03 000-0011 U-Frame: UI (Unnumbered Information)
---0---- P/F, Poll = No Immediate Response Required
L2 03 0F 00001111 MEI (Management Entity Identifier)
L2 04 15 00010101 Ri = 0x1556 (Reference number high)
L2 05 56 01010110 Ri (Reference Number low)
L2 06 01 00000001 TEI Identity message = REQUEST (0x01)
L2 07 FF 1111111- Ai = 127 (Action Indicator = )
-------1 Extension Bit = 1 (no extension, final octet)
-- NT->TE - unit:09 frame:000013 - time:19.07 19:39:40.308653 - length:8 -----
L2 00 FE 111111-- SAPI = 63 (Layer 2 Management)
------1- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 FF 1111111- TEI = 127 = 0x7f (Broadcast TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 03 000-0011 U-Frame: UI (Unnumbered Information)
---0---- P/F, Poll = No Immediate Response Required
L2 03 0F 00001111 MEI (Management Entity Identifier)
L2 04 00 00000000 Ri = 0x0000 (Reference number high)
L2 05 00 00000000 Ri (Reference Number low)
L2 06 06 00000110 TEI Identity message = REMOVE (0x06)
L2 07 E1 1110000- Ai = 112 (Action Indicator)
-------1 Extension Bit = 1 (no extension, final octet)
-- NT->TE - unit:09 frame:000014 - time:19.07 19:39:40.308737 - length:8 -----
L2 00 FE 111111-- SAPI = 63 (Layer 2 Management)
------1- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 FF 1111111- TEI = 127 = 0x7f (Broadcast TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 03 000-0011 U-Frame: UI (Unnumbered Information)
---0---- P/F, Poll = No Immediate Response Required
L2 03 0F 00001111 MEI (Management Entity Identifier)
L2 04 15 00010101 Ri = 0x1556 (Reference number high)
L2 05 56 01010110 Ri (Reference Number low)
L2 06 02 00000010 TEI Identity message = ASSIGNED (0x02)
L2 07 F3 1111001- Ai = 121 (Action Indicator)
-------1 Extension Bit = 1 (no extension, final octet)
-- TE->NT - unit:09 frame:000015 - time:19.07 19:39:40.308951 - length:3 -----
L2 00 00 000000-- SAPI = 0 (Call Control)
------0- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 7F 011-1111 U-Frame: SABME (Set Asynchonous Balanced Mode)
---1---- P/F, Poll = Immediate Response Required
-- TE->NT - unit:09 frame:000016 - time:19.07 19:39:40.308991 - length:8 -----
L2 00 00 000000-- SAPI = 0 (Call Control)
------0- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 00 0000000- N(S) = 0 (send sequence number)
-------0 I-Frame: Information transfer
L2 03 00 0000000- N(R) = 0 (receive sequence number)
-------0 P/F, Poll = No Immediate Response Required
L3 04 08 00001000 Protocol = Q.931/I.451/DSS1 (0x08)
L3 05 01 0000---- Call Reference
----0001 Call Reference length is 1 byte
L3 06 7F 0------- Call Reference is sent from call originator
-1111111 Call Reference = 127 = 0x7f
L3 07 75 0------- Message type extension = 0
-1110101 Message type = STATUS_ENQUIRY (0x75)
-- TE->NT - unit:09 frame:000017 - time:19.07 19:39:40.309022 - length:8 -----
L2 00 00 000000-- SAPI = 0 (Call Control)
------0- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 02 0000001- N(S) = 1 (send sequence number)
-------0 I-Frame: Information transfer
L2 03 01 0000000- N(R) = 0 (receive sequence number)
-------1 P/F, Poll = Immediate Response Required
L3 04 08 00001000 Protocol = Q.931/I.451/DSS1 (0x08)
L3 05 01 0000---- Call Reference
----0001 Call Reference length is 1 byte
L3 06 7F 0------- Call Reference is sent from call originator
-1111111 Call Reference = 127 = 0x7f
L3 07 75 0------- Message type extension = 0
-1110101 Message type = STATUS_ENQUIRY (0x75)
-- NT->TE - unit:09 frame:000018 - time:19.07 19:39:40.404651 - length:3 -----
L2 00 00 000000-- SAPI = 0 (Call Control)
------0- C/R = Response
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 73 011-0011 U-Frame: UA (Unnumbered Acknowledge)
---1---- P/F, Final = Result of Poll
-- NT->TE - unit:09 frame:000019 - time:19.07 19:39:40.436649 - length:4 -----
L2 00 00 000000-- SAPI = 0 (Call Control)
------0- C/R = Response
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 01 00000001 S-Frame: RR (Receiver Ready)
L2 03 02 0000001- N(R) = 1 (receive sequence number)
-------0 P/F, Final = No Result of Poll
-- NT->TE - unit:09 frame:000020 - time:19.07 19:39:40.436787 - length:4 -----
L2 00 00 000000-- SAPI = 0 (Call Control)
------0- C/R = Response
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 01 00000001 S-Frame: RR (Receiver Ready)
L2 03 05 0000010- N(R) = 2 (receive sequence number)
-------1 P/F, Final = Result of Poll
-- TE->NT - unit:09 frame:000021 - time:19.07 19:39:40.436911 - length:8 -----
L2 00 00 000000-- SAPI = 0 (Call Control)
------0- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 04 0000010- N(S) = 2 (send sequence number)
-------0 I-Frame: Information transfer
L2 03 00 0000000- N(R) = 0 (receive sequence number)
-------0 P/F, Poll = No Immediate Response Required
L3 04 08 00001000 Protocol = Q.931/I.451/DSS1 (0x08)
L3 05 01 0000---- Call Reference
----0001 Call Reference length is 1 byte
L3 06 C7 1------- Call Reference is sent to call originator
-1000111 Call Reference = 71 = 0x47
L3 07 0D 0------- Message type extension = 0
-0001101 Message type = SETUP_ACKNOWLEDGE (0x0d)
-- TE->NT - unit:09 frame:000022 - time:19.07 19:39:40.436932 - length:8 -----
L2 00 00 000000-- SAPI = 0 (Call Control)
------0- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 06 0000011- N(S) = 3 (send sequence number)
-------0 I-Frame: Information transfer
L2 03 00 0000000- N(R) = 0 (receive sequence number)
-------0 P/F, Poll = No Immediate Response Required
L3 04 08 00001000 Protocol = Q.931/I.451/DSS1 (0x08)
L3 05 01 0000---- Call Reference
----0001 Call Reference length is 1 byte
L3 06 C7 1------- Call Reference is sent to call originator
-1000111 Call Reference = 71 = 0x47
L3 07 02 0------- Message type extension = 0
-0000010 Message type = CALL_PROCEEDING (0x02)
-- TE->NT - unit:09 frame:000023 - time:19.07 19:39:40.436969 - length:8 -----
L2 00 00 000000-- SAPI = 0 (Call Control)
------0- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 08 0000100- N(S) = 4 (send sequence number)
-------0 I-Frame: Information transfer
L2 03 01 0000000- N(R) = 0 (receive sequence number)
-------1 P/F, Poll = Immediate Response Required
L3 04 08 00001000 Protocol = Q.931/I.451/DSS1 (0x08)
L3 05 01 0000---- Call Reference
----0001 Call Reference length is 1 byte
L3 06 C7 1------- Call Reference is sent to call originator
-1000111 Call Reference = 71 = 0x47
L3 07 01 0------- Message type extension = 0
-0000001 Message type = ALERT (0x01)
-- NT->TE - unit:09 frame:000024 - time:19.07 19:39:40.532649 - length:4 -----
L2 00 00 000000-- SAPI = 0 (Call Control)
------0- C/R = Response
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 01 00000001 S-Frame: RR (Receiver Ready)
L2 03 06 0000011- N(R) = 3 (receive sequence number)
-------0 P/F, Final = No Result of Poll
-- NT->TE - unit:09 frame:000025 - time:19.07 19:39:40.532741 - length:4 -----
L2 00 00 000000-- SAPI = 0 (Call Control)
------0- C/R = Response
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 01 00000001 S-Frame: RR (Receiver Ready)
L2 03 08 0000100- N(R) = 4 (receive sequence number)
-------0 P/F, Final = No Result of Poll
-- NT->TE - unit:09 frame:000026 - time:19.07 19:39:40.532786 - length:4 -----
L2 00 00 000000-- SAPI = 0 (Call Control)
------0- C/R = Response
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 01 00000001 S-Frame: RR (Receiver Ready)
L2 03 0B 0000101- N(R) = 5 (receive sequence number)
-------1 P/F, Final = Result of Poll
-- NT->TE - unit:09 frame:000027 - time:19.07 19:39:40.532883 - length:12 ----
L2 00 02 000000-- SAPI = 0 (Call Control)
------1- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 00 0000000- N(S) = 0 (send sequence number)
-------0 I-Frame: Information transfer
L2 03 0A 0000101- N(R) = 5 (receive sequence number)
-------0 P/F, Poll = No Immediate Response Required
L3 04 08 00001000 Protocol = Q.931/I.451/DSS1 (0x08)
L3 05 01 0000---- Call Reference
----0001 Call Reference length is 1 byte
L3 06 47 0------- Call Reference is sent from call originator
-1000111 Call Reference = 71 = 0x47
L3 07 4D 0------- Message type extension = 0
-1001101 Message type = RELEASE (0x4d)
L3 08 08 0------- Variable length Information element
-0001000 IE = cause
L3 09 02 00000010 IE Length = 2 bytes
L3 0A 81 1------- Extension Bit = 1 (no extension, final octet)
-00----- Coding standard = CCITT
---0---- Spare
----0001 Location = Private network serving local user
L3 0B E2 1------- Extension Bit = 1 (no extension, final octet)
-1100010 Cause = 98: Q.850: message not compatible with call
state or message type non-existent or not implemented
-- TE->NT - unit:09 frame:000028 - time:19.07 19:39:40.533066 - length:4 -----
L2 00 00 000000-- SAPI = 0 (Call Control)
------0- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 01 00000001 S-Frame: RR (Receiver Ready)
L2 03 02 0000001- N(R) = 1 (receive sequence number)
-------0 P/F, Poll = No Immediate Response Required
-- NT->TE - unit:09 frame:000029 - time:19.07 19:39:40.628649 - length:15 ----
L2 00 02 000000-- SAPI = 0 (Call Control)
------1- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 02 0000001- N(S) = 1 (send sequence number)
-------0 I-Frame: Information transfer
L2 03 0A 0000101- N(R) = 5 (receive sequence number)
-------0 P/F, Poll = No Immediate Response Required
L3 04 08 00001000 Protocol = Q.931/I.451/DSS1 (0x08)
L3 05 01 0000---- Call Reference
----0001 Call Reference length is 1 byte
L3 06 47 0------- Call Reference is sent from call originator
-1000111 Call Reference = 71 = 0x47
L3 07 7D 0------- Message type extension = 0
-1111101 Message type = STATUS (0x7d)
L3 08 08 0------- Variable length Information element
-0001000 IE = cause
L3 09 02 00000010 IE Length = 2 bytes
L3 0A 81 1------- Extension Bit = 1 (no extension, final octet)
-00----- Coding standard = CCITT
---0---- Spare
----0001 Location = Private network serving local user
L3 0B E2 1------- Extension Bit = 1 (no extension, final octet)
-1100010 Cause = 98: Q.850: message not compatible with call
state or message type non-existent or not implemented
L3 0C 14 0------- Variable length Information element
-0010100 IE = call state
L3 0D 01 00000001 IE Length = 1 bytes
L3 0E 13 -00----- Coding standard = CCITT
---10011 state = Release request
-- TE->NT - unit:09 frame:000030 - time:19.07 19:39:40.628762 - length:4 -----
L2 00 00 000000-- SAPI = 0 (Call Control)
------0- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 01 00000001 S-Frame: RR (Receiver Ready)
L2 03 04 0000010- N(R) = 2 (receive sequence number)
-------0 P/F, Poll = No Immediate Response Required
-- NT->TE - unit:09 frame:000031 - time:19.07 19:39:44.596597 - length:12 ----
L2 00 02 000000-- SAPI = 0 (Call Control)
------1- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 04 0000010- N(S) = 2 (send sequence number)
-------0 I-Frame: Information transfer
L2 03 0A 0000101- N(R) = 5 (receive sequence number)
-------0 P/F, Poll = No Immediate Response Required
L3 04 08 00001000 Protocol = Q.931/I.451/DSS1 (0x08)
L3 05 01 0000---- Call Reference
----0001 Call Reference length is 1 byte
L3 06 47 0------- Call Reference is sent from call originator
-1000111 Call Reference = 71 = 0x47
L3 07 4D 0------- Message type extension = 0
-1001101 Message type = RELEASE (0x4d)
L3 08 08 0------- Variable length Information element
-0001000 IE = cause
L3 09 02 00000010 IE Length = 2 bytes
L3 0A 81 1------- Extension Bit = 1 (no extension, final octet)
-00----- Coding standard = CCITT
---0---- Spare
----0001 Location = Private network serving local user
L3 0B E2 1------- Extension Bit = 1 (no extension, final octet)
-1100010 Cause = 98: Q.850: message not compatible with call
state or message type non-existent or not implemented
-- TE->NT - unit:09 frame:000032 - time:19.07 19:39:44.596713 - length:4 -----
L2 00 00 000000-- SAPI = 0 (Call Control)
------0- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 01 00000001 S-Frame: RR (Receiver Ready)
L2 03 06 0000011- N(R) = 3 (receive sequence number)
-------0 P/F, Poll = No Immediate Response Required
-- NT->TE - unit:09 frame:000033 - time:19.07 19:39:54.612463 - length:4 -----
L2 00 02 000000-- SAPI = 0 (Call Control)
------1- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 01 00000001 S-Frame: RR (Receiver Ready)
L2 03 0B 0000101- N(R) = 5 (receive sequence number)
-------1 P/F, Poll = Immediate Response Required
-- NT->TE - unit:09 frame:000034 - time:19.07 19:39:55.604447 - length:4 -----
L2 00 02 000000-- SAPI = 0 (Call Control)
------1- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 01 00000001 S-Frame: RR (Receiver Ready)
L2 03 0B 0000101- N(R) = 5 (receive sequence number)
-------1 P/F, Poll = Immediate Response Required
-- NT->TE - unit:09 frame:000035 - time:19.07 19:39:56.596437 - length:4 -----
L2 00 02 000000-- SAPI = 0 (Call Control)
------1- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 01 00000001 S-Frame: RR (Receiver Ready)
L2 03 0B 0000101- N(R) = 5 (receive sequence number)
-------1 P/F, Poll = Immediate Response Required
-- NT->TE - unit:09 frame:000036 - time:19.07 19:39:57.588428 - length:4 -----
L2 00 02 000000-- SAPI = 0 (Call Control)
------1- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 01 00000001 S-Frame: RR (Receiver Ready)
L2 03 0B 0000101- N(R) = 5 (receive sequence number)
-------1 P/F, Poll = Immediate Response Required
-- NT->TE - unit:09 frame:000037 - time:19.07 19:39:58.580408 - length:3 -----
L2 00 02 000000-- SAPI = 0 (Call Control)
------1- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 7F 011-1111 U-Frame: SABME (Set Asynchonous Balanced Mode)
---1---- P/F, Poll = Immediate Response Required
-- NT->TE - unit:09 frame:000038 - time:19.07 19:39:59.540394 - length:3 -----
L2 00 02 000000-- SAPI = 0 (Call Control)
------1- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 7F 011-1111 U-Frame: SABME (Set Asynchonous Balanced Mode)
---1---- P/F, Poll = Immediate Response Required
-- NT->TE - unit:09 frame:000039 - time:19.07 19:40:00.532455 - length:3 -----
L2 00 02 000000-- SAPI = 0 (Call Control)
------1- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 7F 011-1111 U-Frame: SABME (Set Asynchonous Balanced Mode)
---1---- P/F, Poll = Immediate Response Required
-- NT->TE - unit:09 frame:000040 - time:19.07 19:40:01.524384 - length:3 -----
L2 00 02 000000-- SAPI = 0 (Call Control)
------1- C/R = Command
-------0 Extension Bit = 0 (with extension, octet follows)
L2 01 F3 1111001- TEI = 121 = 0x79 (Automatic TEI)
-------1 Extension Bit = 1 (no extension, final octet)
L2 02 7F 011-1111 U-Frame: SABME (Set Asynchonous Balanced Mode)
---1---- P/F, Poll = Immediate Response Required
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