High integration
ZXMP M721 sub-racks are only 1RU, 2RU and 3RU high,providing 8 slots (DX62, 2RU DC input), 6 slots (DX62, 2RU AC input), 3 slots (DX61,1RU), and 6 slots (DX63, 3RU), resulting in space saving, power consumption reduction and operation &maintenance expense decreasing.

Powerful transmission performance
ZXMP M721 supports 40×10G DWDM system, 18×2.5G or 10×2.5G+8×10G CWDM system, and both systems support smooth upgrade.
DWDM system supports multi-span transmission without OEO electrical relay (18×22dB, 7×30dB, 1×45dB etc.). CWDM 2.5G system supports 28dB transmission, target distance of CWDM 10G system is 70KM.

Diversity access service type
ZXMP M721 can access any-rate-service (100Mbit/s~7.5Gbit/s),and the port supports automatic identification of service types,eliminating the needs to configure manually via NMs.

SDH service: STM-1/4/16/64, OC-3/12/48/192, POS, E1/T1.
Ethernet service: FE, GE, 10GE, 100GE;

Storage and video streaming service: 1G/2G/4G/8G/10G FC, ESCON, FICON, Infiniband 10G, DVB-ASI, SD-SDI/HDSDI/
3G-SDI;

CPRI: OPTION 2/3/4/5/6/7;

OTN: OTU1, OTU2, OTU2e, OTU1f.

Flexible service grooming
M721 supports DSS (Distributed Service Switch platform) based on ODU0/ODU1/flex.
Services aggregation: 4-10×Any-rate-service→OTU1, 4-22×Any-rate-service→OTU2.
10G-any services convert to OTU2, support single channel, double channels, and integrated protection OTU cards.

Reliable protection scheme
ZXMP M721 supports control card/power card 1+1 backup and OMS/OCH 1+1 and ODUk 1+1 protection. All the protection switching time of OMS 1+1, OCH 1+1 and ODUk 1+1 are less than 50ms in compliance with ITU-T standards.

Time Synchronization

ZXMP M721 supports 1588V2 time synchronization and Sync E.

Optional OSC/ESC
ZXMP M721 supports OSC (optical supervision channel) and ESC (electrical supervision channel) providing flexibility for deployment.