Fiberhome CiTRANS600 Series are new generation metropolitan optical transport network platform which are applied to for packet transport network. The design is based on MPLS-TP architecture, uses PWE3 to emulate TDM services and Ethernet services via label-switching. CiTRANS600 series inherit high-efficiency of SDH in maintenance with easy and friendly GUI (graphical User Interface) NMS (Network Management System), and in the meanwhile support end-to-end hierarchical QoS scheduling and high-precision clock synchronization for operators and subscribers.CiTRANS 600 series cover the entire network layers where switching capacity from 4.2Gbps to 12.8Tbps. CiTRANS 600 series are applied for Carrier Ethernet applica-tions including TDM/Ethernet leased-line services and L2VPN services, mobile backhaul services and etc. through a unified network architecture.
As a member of the CiTRANS 600 Metropolitan Optical Transport Network Platform,CiTRANS 660 is applied to metropolitan aggregation core layer which delivered 160G/320Gbps(Unidirectional) of non-blocking forwarding with affluent TDM/Eth-ernet interface (10GE at maximum).
Based on 100% packet transmission architecture. Devices converge on a single platform to meet the needs of Internet transportation and metro core interconnection applications in order to cater all services
Support PWE3 and Tunnel technology to realize Ethernet and traditional services including TDM services transmission, eliminates the cost and operational complexity that result from the deployment of single-purpose devices
Plug-and-play. Automatically allocation of IP address of the devices through a boot server eases switch deployment, manual software debugging procedure and increasing efficiency in startup services.
Access Virtually. All the configuration can only be done on devices in online status, which degrades hierarchy configuration on all online and offline device and realizes intensive operation
Comprehensive end-to-end QoS solution provides refined differentiated services. It supports Diff-Serv based on QoS scheduling. Implementing bandwidth control of user-level multi-service, guarantee time-delay-sensitive services with high priority forwarding to provide differential services to VIPs
MPLS-TP and Ethernet OAM. Based on hardware hierarchy monitoring, it implements fast fault detection and location, performance monitoring, and end-to-end service management.
Support protection based-on device and protection based-on Network. It provide carrier-class transmission function equivalent to SDH robustness and the recovery time less than 50ms
Uniform Network Management provides SDH-like GUI operation.
With Advanced Traffic monitoring tools, users are able to expand network via hierarchy traffic statistics where the statistical report is based on actual traffic and alarm generated when threshold happen in both LSP and PW on UNI/NNI port. OAM performances detecting system model to build end-to-end OAM configuration, and it provides alarm-relevant to increase efficiency in fault localization.
Fiberhome CiTRANS 660 can be applied to IP Radio Access Network (IPRAN), fixed broadband data convergence and other scenarios.The integration of packet processing, optical transmission capacity, E1, STM-1, FE, GE,10GE and other interface of fixed network users, commercial network users and mobile network users not only offering abundant service types but also perfection of service management mechanism.

| Feature | Specifications | |
| Switching capacity(Throughput) | 160Gbps with 24service slots 320Gbps with 26 service slots |
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| Maximum interface capability | 160Gbps | 320Gbps |
| E1: 224 STM-1: 120 FE: 168 GE: 120 10GE: 14 |
E1: 224 STM-1: 128 FE: 168 GE: 140 10GE: 30 |
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| Interface synchronization processing | Outer clock interface:1PPS+TOD All physical port can extract time information by SyncE, all the Ethernet port support 1588V2 to deliver time information |
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| Hardware redundancy | Important parts redundancy backup(including Network Management Unit, Switch& Clock Unit, Power Unit etc),all parts can be hot plug |
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| Physical dimensions | Height: 22 RU 99.3cm (39.1 in.) Depth: 24.8 cm (9.8 in.) Width: 49.6 cm (19.5 in.) Standard 21-inch equipment rack, 12-inch depth |
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| Input voltage | Worldwide ranging AC (90‒265V; 50‒60 Hz) Worldwide ranging DC (‒36V to 72V ) |
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| Power consumption | 450W typical | |
| Weight | Empty chassis: 25.9 kg (57.1 lb) | |
| Operating temperature | -10°C to +50°C (14°F to +122°F) | |
| Relative humidity | 10% to 100% | |
| Electromagnetic compatibility standards | ETSI EN 300 386, EN 55022, EN55024, EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6, CISPR 22, CISPR 24, ITU-T K.20, ITU-T K.21, ITU-T K.43, ITU-T K.44 |
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| Safety standards | EN 60950-1, IEC 60950-1 | |