I'm fairly new to ISDN signaling. Could someone tell me what I'm
missing when I send the RESTART?
Thanks.:

13:38:14.978 Tx1 RR
00 01 01 03
LAPD: RR
13:38:15.002 Tx1 I.RESTART
02 01 02 02 08 02 00 00 46 79 01 86
LAPD: I
-- Address
00 02 000000.. SAPI............................ 0 (Call
control procedures)
......1. C/R............................. 1
.......0 EA0............................. 0
01 01 0000000. TEI............................. 0 -> Non-
automatic TEI assignment user equipment
.......1 EA1............................. 1
-- Control
02 02 0000001. N(S)............................ 1
.......0 Reserved........................ 0
03 02 0000001. N(R)............................ 1
.......0 P/F............................. 0
-- Information
[4-11] ***B8*** Information..................... 8 Octets
(hex): 08 02 00 00 46...

PRI ANSI: RESTART
04 08 00001000 Protocol discriminator.......... Recommendation
Q.931/I.451 user-network call control messages (
-- Call reference
05 02 0000.... spare........................... 0
....0010 Length of call reference value.. 2
06 00 0....... Flag............................ 0 (The message
is sent from the side that originates the call reference)
[6-7] ***B2*** Call reference value............ 0
-- Message type
08 46 01000110 Message type.................... RESTART (70)
-- Restart indicator
09 79 01111001 Information Element Identifier.. Restart
indicator IEI (121)
10 01 00000001 Length indicator................ 1
11 86 1....... Extension indicator............. 1 (last octet)
.0000... spare........................... 0
.....110 Class........................... 6 (Single
interface)
13:38:15.036 Rx1 RR
02 01 01 04
LAPD: RR
-- Address
00 02 000000.. SAPI............................ 0 (Call
control procedures)
......1. C/R............................. 1
.......0 EA0............................. 0
01 01 0000000. TEI............................. 0 -> Non-
automatic TEI assignment user equipment
.......1 EA1............................. 1
-- Control
02 01 0000.... Reserved........................ 0
....00.. S............................... 0
......01 Reserved 2...................... 1
03 04 0000010. N(R)............................ 2
.......0 P/F............................. 0

13:38:15.036 Rx1 I.RESTART ACKNOWLEDGE
00 01 02 04 08 02 80 00 4E 18 01 A8 79 01 86
LAPD: I
-- Address
00 00 000000.. SAPI............................ 0 (Call
control procedures)
......0. C/R............................. 0
.......0 EA0............................. 0
01 01 0000000. TEI............................. 0 -> Non-
automatic TEI assignment user equipment
.......1 EA1............................. 1
-- Control
02 02 0000001. N(S)............................ 1
.......0 Reserved........................ 0
03 04 0000010. N(R)............................ 2
.......0 P/F............................. 0
-- Information
[4-14] **B11*** Information..................... 11 Octets
(hex): 08 02 80 00 4E...
PRI ANSI: RESTART ACKNOWLEDGE
04 08 00001000 Protocol discriminator.......... Recommendation
Q.931/I.451 user-network call control messages (
-- Call reference
05 02 0000.... spare........................... 0
....0010 Length of call reference value.. 2
06 80 1....... Flag............................ 1 (The message
is sent to the side that originates the call reference)
[6-7] ***B2*** Call reference value............ 0
-- Message type
08 4E 01001110 Message type.................... RESTART
ACKNOWLEDGE (7
-- Channel identification
[9-11] ***B3*** Channel identification[0]....... see below
09 18 00011000 Information Element Identifier.. Channel
identification IEI (24)
10 01 00000001 Length indicator................ 1
11 A8 1....... Extension indicator............. 1 (last octet)
.0...... Interface identifier present.... 0 (Interface
implicitly identified)
..1..... Interface type.................. 1 (Other
interface)
...0.... spare........................... 0
....1... Preferred/Exclusive............. 1 (Exclusive;
only the indicated channel is acceptable)
.....0.. D-channel indicator............. 0 (The channel
identified is not the D-channel)
......00 Information channel selection... 0 (No channel)
Extension indicator 3........... [undefined]
Coding standard................. [undefined]
Number/Map...................... [undefined]
Channel type/Map element type... [undefined]
-- Restart indicator
Information Element Identifier.. [undefined]
Length indicator................ [undefined]
Extension indicator............. [undefined]
spare........................... [undefined]
Class........................... [undefined]
Warning: discrepancy in
encoding: .Channel_identification(0)
.Extension_indicator_3: insufficient or illegal
binary data: at least 66 bits
required, but only 64 bits present

13:38:15.036 Tx1 RR
00 01 01 04
LAPD: RR
-- Address
00 00 000000.. SAPI............................ 0 (Call
control procedures)
......0. C/R............................. 0
.......0 EA0............................. 0
01 01 0000000. TEI............................. 0 -> Non-
automatic TEI assignment user equipment
.......1 EA1............................. 1
-- Control
02 01 0000.... Reserved........................ 0
....00.. S............................... 0
......01 Reserved 2...................... 1
03 04 0000010. N(R)............................ 2
.......0 P/F............................. 0