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---
title: Sercomm FGS202
has_children: false
layout: default
parent: Sercomm
---
# Hardware Specifications
| | |
| ------------ | --------------------------------- |
| Vendor/Brand | Sercomm |
| Model | FGS202 |
| Chipset | Lantiq PEB98036 |
| Flash | 8 MB |
| RAM | 32 MB |
| System | eCos |
| HSGMII | Yes |
| Optics | SC/APC |
| IP address | 169.254.199.139 |
| Web Gui | No |
| SSH | No |
| Telnet | ✅ user `admin`, password `admin` |
| Serial | No |
| Form Factor | miniONT SFP |
{% include image.html file="fgs202.jpg" alt="Sercomm FGS202" caption="Sercomm FGS202" %}
{% include image.html file="fgs202_teardown.jpg" alt="Sercomm FGS202 teardown" caption="Sercomm FGS202 teardown" %}
## Telnet Access
The stick has telnet available only on the PON side, the only way to access it is by using an OLT.
## List of software versions
- SCOMFGS202305 (TIM Italy)
- SCOMFGS202304 (TIM Italy)
# GPON ONU status
## Getting the operational status of the ONU
```sh
# show gpon
PON STATUS :O5
LOS Times :0
Connect Time :0 day 2 hour 29 min
TX POWER :2.97mW 4.73dBm
RX POWER :35.29uW -14.46dBm
T-CONT
tcont_idx alloc_id reg_egress_port pre_egress_port
0 256 0 127
8 0 127 63
GEM TOTAL COUNT
gem_port_id gem_port_index tx_frames tx_bytes rx_frames rx_ bytes
0 255 408 19584 365 17520
145 1 44087 15072176 0 0
4095 0 0 0 83591 20759980
```
## Querying a particular OMCI ME
```sh
# show me [cla_id][ins_id]
# show me 7
Class ID = 7 (Software image)
Instance ID = 0
Upload = yes
Alarms = -
-------------------------------------------------------------------------------
0 Version 14b STR R------P---
0x53 0x43 0x4f 0x4d 0x46 0x47 0x53 0x32 0x30 0x32 0x33 0x30 0x34 0x00
SCOMFGS202304\x00
-------------------------------------------------------------------------------
1 Is committed 1b UINT R----------
0x00 (0)
-------------------------------------------------------------------------------
2 Is active 1b UINT R----------
0x00 (0)
-------------------------------------------------------------------------------
3 Is valid 1b UINT R----------
0x01 (1)
-------------------------------------------------------------------------------
Class ID = 7 (Software image)
Instance ID = 1
Upload = yes
Alarms = -
-------------------------------------------------------------------------------
0 Version 14b STR R------P---
0x53 0x43 0x4f 0x4d 0x46 0x47 0x53 0x32 0x30 0x32 0x33 0x30 0x35 0x00
SCOMFGS202305\x00
-------------------------------------------------------------------------------
1 Is committed 1b UINT R----------
0x01 (1)
-------------------------------------------------------------------------------
2 Is active 1b UINT R----------
0x01 (1)
-------------------------------------------------------------------------------
3 Is valid 1b UINT R----------
0x01 (1)
-------------------------------------------------------------------------------
```
# GPON/OMCI settings
## Setting ONU GPON PLOAM password
```sh
# set gpon_password PASSWORD
Set command exectue successfully.
```
# Advanced settings
## Showing live OMCI messages
```sh
# show omci
1970-01-01 02:34:53 ploam us: onu id - 0 / rei
ploam us|00 08 00 00 00 00 9b 00 00 00 00 00
1970-01-01 02:34:53 ploam ds: onu id - 255 / UpstreamOverhead
ploam ds|ff 01 20 00 00 aa ab 59 83 20 00 00
1970-01-01 02:34:53 ploam ds: onu id - 255 / UpstreamOverhead
```
# Hardware Modding
- Pin 7 GND → VCC [Fibra.Click - FAQ: 2.5Gbps su singolo dispositivo su Tim, Vodafone, Fastweb/JustSpeed](https://forum.fibra.click/d/27574-faq-25gbps-su-singolo-dispositivo-su-timvodafonefastwebjustspeed/18)
- Only for Ubiquiti [OpenWRT Forum - Support for GPON SFP](https://forum.openwrt.org/t/support-for-gpon-sfp-fgs202/42641/47)
# Miscellaneous Links
- [Support for GPON SFP FGS202](https://forum.openwrt.org/t/support-for-gpon-sfp-fgs202/42641/60)
- [SerComm FGS202](https://wikidevi.wi-cat.ru/SerComm_FGS202)
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