Functions of different modules on an LWF board on BWS 1600G

Question:
What are functions of OTRG, OTTF, OTRB, OTRH, OTRM, OTRK, OTRC, and T2MZ modules on an LWF board on BWS 1600G?
Answer:
The LWF board supports multiple types of optical modules. WDM-side modules work in the C band (192.1�?96.0 THz) and L band (187.00�?90.90 THz) with the channel spacing being 50 GHz and 100 GHz respectively.
The SDH side can be equipped with the SSA3OTRL and purchased transponders. The WDM side can be equipped with transponders, including SSE1OTRH, SSE1OTRB, SSE1OTTF, and SSE1OTRK. The board software identifies the module type by reading EEPROM data. SSE1OTRH uses 40 wavelengths in the C-band with 100 GHz channel spacing. The dispersion tolerance is greater than 800 ps/nm. The dispersion-limited space is 40 km.
SSE1OTRM uses 160 wavelengths with the wavelength locking function. The channel spacing is 50 GHz. The dispersion tolerance is greater than 800 ps/nm. The dispersion-limited space is 40 km.
SSE1OTRB uses 160 wavelengths with VOA and wavelength locking functions. The channel spacing is 50 GHz.
SSX1T2MZ uses 160 wavelengths with the VOA function but without the wavelength locking function. The channel spacing is 50 GHz.
SSE1OTTF uses tunable wavelengths with the wavelength locking function.
SSE1OTRK uses 40 wavelengths in the C-band with 100 GHz channel spacing. SSE2OTRK uses 160 wavelengths with the wavelength locking function. The channel spacing is 50 GHz.

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