Specifications

Installation and Operation Manual Appendix C I2C Interface Management
MiTOP-E1/T1 Ver. 1.0 Status Parameters C-7
During the first five seconds after MiTOP-E1/T1 is inserted into the host SFP
socket, MiTOP-E1/T1 responds to I
2
C messages without using cycle stretching
functionality. After the first five seconds MiTOP-E1/T1 handles I
2
C messages
according to the configured I
2
C cycle stretching mode:
• Normal operation – MiTOP-E1/T1 users I
2
C cycle stretching. This is the default
mode.
• Without stretching – MiTOP-E1/T1 responds to messages from the host
without using cycle stretching functionality. This allows hosts that do not
support cycle stretching to operate successfully, with the minimum of error
cycles.
C.5 Status Parameters
Table C-2. Status Parameters
Index R/W Parameter
Length
Description
0x3E8 R 1 E1/T1 status
1 – Active, 0 – Inactive
• Digit 0: LOS
• Digit 1: LOF
• Digit 2: RAIS
• Digit 3: RYEL (yellow alarm), T1 only
• Digit 4: RDI, E1 only
0x3E9 R 1 Ethernet and SFP status
1 – Active, 0 – Inactive
• Digit 0: Ethernet status
• Digit 1: Tx Disable
0x400 R 4 Bundle good packets received
0x401 R 4 Bundle good packets transmitted
0x402 R 4 Bundle sequence errors
0x403 R 4 Bundle discarded packets
0x404 R 4 Bundle jitter buffer underflow
0x405 W 1 Clear bundle statistics
0x406 R 4 Bundle jitter buffer overflow
0x407 R 4 Current jitter buffer level
0x408 R 4 Max jitter buffer level
0x410 R 4 Min jitter buffer level