Cisco ONS 15300 Series

Cisco ONS 15302 Multiservice Access Platform

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The Cisco® ONS 15302 Multiservice Provisioning Platform (MSPP) provides a simple solution for Ethernet and TDM service delivery to the customer premises. Together with the Cisco ONS 15305 and Cisco ONS 15454 SDH Multiservice Provisioning Platforms, the Cisco ONS 15302 provides an end-to-end solution for multiservice transport over SDH networks.


The Cisco ONS 15302 is a terminal multiplexer that extends the optical access network to the customer premises. With an STM-1 uplink to SDH optical networks, the Cisco ONS 15302 can collect voice and data traffic for switched services, Internet access, and VPNs. In only 1 rack unit (RU), the Cisco ONS 15302 combines data and voice traffic by transporting Ethernet and TDM channels inside an SDH STM-1 frame. A Layer 2 switch fabric allows native 10/100BASE-T Ethernet mapping into up to four virtual container groups (VCG) for point-to-point or point-to-multipoint transport over the SDH network. VCG bandwidth can be configured in as little as 2-Mbps increments.

Figure 1

Front and Rear Views of the Cisco ONS 15302 MSPP


The Cisco ONS 15302 management solution is based on an embedded Simple Network Management Protocol (SNMP) agent. A local craft interface called Cisco Edge Craft and the element management system, Cisco Transport Manager, allow remote supervision and provisioning for Cisco ONS 15302 devices. The Cisco ONS 15302 also provides a simple VT100 command-line interface (CLI) for initial setup and direct management of the unit. Administrators can manage the system by accessing it locally via the VT100 RS-232 port or the dedicated Ethernet management port. Remote access is possible via IP Point-to-Point Protocol (PPP)-based data communications network (DCN) or in band via one of the LAN or WAN ports.


Multiservice Delivery

The Cisco ONS 15302 offers a small form factor (only 1 RU) and is capable of terminating traditional TDM and native Ethernet traffic, making it an ideal service-delivery device. As shown in Figure 2, traffic from up to 12 E1 and 4 10/100 Mbps Ethernet interfaces can be collected in a single Cisco ONS 15302 unit to be transported back to the first point of traffic aggregation on the service provider network. For Ethernet services, bandwidth can be configured individually for each LAN port in 2-Mbps increments. This allows service providers to deliver different levels of service based on each customer's needs.

Figure 2

Cisco ONS 15302 as a Multiservice Delivery Platform


Enterprise Private Networks

The Cisco ONS 15302 can serve as an optical transport platform for enterprise private networks. A Cisco ONS 15305 device located at the headquarters or main building of an office, university, or government campus can aggregate Ethernet and TDM traffic from multiple remote sites (Figure 3) where Cisco ONS 15302 units are used as termination devices. A similar application takes place in high-rise buildings where a Cisco ONS 15305 can serve as a hub to distribute traffic via an optical backbone network to Cisco ONS 15302 terminals in different floors (Figure 4).

Figure 3

Metropolitan or Campus Enterprise Network


Figure 4

Enterprise Network in a High-Rise Building



Ethernet over SDH Standards Compliance

The Cisco ONS 15302 offers ITU-T G.7041-compliant Generic Framing Procedure (GFP) encapsulation of Ethernet traffic for easy integration with existing SDH networks. The product also uses ITU-T G.707-compliant low-order and high-order virtual concatenation and ITU-T G.7042-compliant link capacity adjustment scheme (LCAS), making it more effective for scalable, next-generation optical infrastructures.

Integrated Layer 2 Switching

The Cisco ONS 15302 has an integrated Layer 2 switch that permits advanced management of packets for various applications and network configurations, such as data-traffic aggregation, and multipoint connections.

Flexible Network Topologies

The Cisco ONS 15302 can deliver traditional E1 services as well as native Ethernet traffic to the customer premises over unprotected or linear 1+1 MSP-protected STM-1 links. Ethernet bandwidth can be configured individually on each LAN port, only limited by the WAN capacity, which can be up to a full STM-1. Bandwidth can be added individually per port in 2-Mbps increments up to a maximum of 100 Mbps for Fast Ethernet. Many applications involve a simple point-to-point connection - either directly or through an SDH network - between two Cisco ONS 15302 units over an STM-1 circuit. Also, several branch offices can be connected to a headquarters location in a point-to-multipoint topology, where each branch can have individually dedicated bandwidth. Additional branches can be added by stacking units at headquarters. This "hub-and-spoke" topology is shown in Figure 5.

Figure 5

Point-to-Multipoint Connections over an SDH Infrastructure


Simplified Management for All Cisco Optical Platforms

The Cisco ONS 15302 is managed by the Cisco Transport Manager element management system (EMS), which integrates all Cisco optical products under a single screen for network management. Cisco Transport Manager can indicate alarms and events of Cisco ONS 15302 devices in customer networks. Cisco Transport Manager can also display G.826 performance-monitoring parameters recorded by the Cisco ONS 15302 counters. Additionally, Cisco Transport Manager can cross-launch the Cisco ONS 15302 and Cisco ONS 15305 craft tool, the Cisco Edge Craft, to configure and provision Cisco ONS 15302 network elements.


The Cisco ONS 15302 MSPP facilitates transport of Ethernet and time-division multiplexing (TDM) traffic over optical networks. The simple approach to integrate Layer 2 Ethernet intelligence with embedded optical transport technology allows cost-effective delivery of advanced Ethernet and traditional TDM services using an existing SDH infrastructure. This consolidation eliminates duplicate operations, administration, maintenance, and provisioning costs in the service provider infrastructure. Together with the Cisco ONS 15454 and the Cisco ONS 15305, the Cisco ONS 15302 provides an end-to-end solution for multiservice transport over SDH networks that can be monitored and provisioned on a single Cisco Transport Manager EMS screen.


The tables below show the technical specifications of the Cisco ONS 15302.

Table 1. Optical Interfaces




ITU-T G.707 - Optical line signal

ITU-T G.783 - Rx pull in and hold range

ITU-T G.813 - Output jitter

ITU-T G.825&G.958 - Input jitter

ITU-T G.957 - Transmission

S1.1 optical interface

Source type: Laser diode

Wavelength: 1260 - 1360 nm

Modulation: 155,520 kbps

Transmit power: -8 dBm maximum, -12 dBm minimum

Receiver: -30 dBm sensitivity (BER < 1 in 1010) 0 dBm minimum overload

Connectors: SC


Table 2. Electrical Interfaces



E1 - 12 x 2 Mbps
G.703 and ISDN Primary Rate Access (PRA)

Bit rate: 2048 kbps ± 50 ppm

Line code: HDB3

Input jitter: According to ITU-T G.823

Output jitter: According to ITU-T G.783

Termination: 120 ohms on RJ-45 connectors (75 ohms with external balun)


Table 3. Data Interfaces



4 x 10/100BASE-T

Compliance: According to IEEE 802.3

Connector: RJ-45 type


Table 4. Ethernet Features



Ethernet Layer 2 switching

MAC switching

Self-learning MAC addresses

Static MAC entries

Support of up to 24,000 MAC addresses

Automatic aging for MAC addresses

MAC multicast

Supports up to 6144-byte frames

Support for up to 9216-byte frames in Layer 1 mode

Transparent bridging

IEEE 802.1Q VLAN tagging

802.1q in 802.1q

Layer 2 Control Protocol tunneling

Head-of-line blocking prevention

Back pressure and flow-control handling

IGMP support

Spanning Tree Protocol according to IEEE 802.1D

RSTP according to IEEE 802.1w

Mirroring port

IEEE 802.1p priorities

Ethernet over SDH transport

ITU-T G.7041 Generic Framing Procedure (GFP)

ITU-T G.707 Virtual Concatenation

VC-12-Xv, X=1-50; VC-3-Xv, X=1-3, VC-4

ITU-T G.7042 Link Capacity Adjustment Scheme (LCAS)


Table 5. Performance Monitoring




ITU-T G.826


B1 near end, B2 near and far end

VC-3 and VC-4

B3 near and far end


BIP-2 near and far end



Table 6. Timing




STM-1, 2048 kHz synchronization input, E1 tributary (PRA)


2048-kHz synchronization output (output signal balance according to ETS 300 126)


One 8-pin RJ-45 for both input and output


Table 7. External Alarm Ports




One 9-pin D-type connector


4 ports


2 ports


Table 8. Power



DC power

-36 VDC to -72 VDC (-48 VDC nominal)

AC power

AC: 230 VAC +/-10%


< 25W fully loaded without WAN module, < 40W with WAN plug-in module


Table 9. Safety and Environmental




EN 55022 Class B and EN 50082-1


EN 60950 and EN 60825


Thermal requirement: EN 60950

Operating temperature: (-5 to 45°C) according to ETS 300 019-1-3, Class 3.2

Storage: ETS 300 019-2-1, Class 1.1

Transport: ETS 300 019-2-2, Class 2.2


Table 10. Network Management



Craft tool

Cisco Edge Craft


Cisco Transport Manager


Table 11. Physical Dimensions



H x W x D

43 x 445 x 240 mm (1 RU)


< 4 kg



To place an order, visit the Cisco Ordering Home Page.

Table 12. Cisco ONS 15302 Ordering Information

Product Name

Part Number

Cisco ONS 15302 Unprotected SC, STM1-SH, Release 2.0 Software, Ship-Kit


Cisco ONS 15302 Protected SC, STM1-SH, Release 2.0 Software, Ship-Kit


Cisco ONS 15302 Unprotected SC, STM1-SH, Release 2.0 Software, Ship-Kit and WAN R2


Cisco ONS 15302 Protected SC, STM1-SH, Release 2.0 Software, Ship-Kit and WAN R2


Cisco ONS 15302 System Documentation Release 2.0.0, English, CD


Cisco ONS 15302 Software Release 2.0 Feature Package, CD


Cisco ONS 15302 Ship Kit 


Cisco ONS 15302 Cisco Edge Craft Management Tool, R2.0.0



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For more information about the Cisco ONS 15302, visit or contact your local account representative.