Central Office (CO. A telephone company building where customer lines are joined to a switch or switches for connection to the PSTN.
Central Office (CO. A telephone company building where customer lines are joined to a switch or switches for connecting customers to each other.
Central Office (CO. As presented in section 2.1.1, the CO (OLT) of SODALES should not differ much from a high- density ARN without customer ports installed in a modular blade configuration. During the last two years of the SODALES project, three new boards were developed and are now available for the CO: • CXO2T2 – a Switch Fabric and CPU board that is able to switch at a 2.2Tbps rate. • TU100G – an uplink interface card featuring a 100Gbps interface • TA12XG – an card with 12x 10Gbps SFP+ interfaces that can be used either as uplink or access. The expected cost of the cards for volume production would be: Table 7 - Learning curve parameters for different categories of elements at the C.O. (OLT1T3) OLT 1T3 (C.O.) Current unitary Cost (EUR) Type of learning cost (1-7) Unitary cost (EUR) 100 Unitary cost (EUR) 1,000 Unitary cost (EUR) 10,000 Unitary cost (EUR) 100,000 XXX Xxxxxxx 3.362,31 € 7 2319,99 1681,16 1176,81 840,58 CXO 640G 3.194,32 € 4 3098,4904 2619,3424 1661,0464 958,296 CXO2T2 6.704,46 € 4 6503,3262 5497,6572 3486,3192 2011,338 TU100G 3.091,03 € 4 2998,2991 2534,6446 1607,3356 927,309 TA12XG 2.770,25 € 4 2687,1425 2271,605 1440,53 831,075 TU40G 1.172,78 € 4 1137,5966 961,6796 609,8456 351,834 TA48GE 2.128,16 € 4 2064,3152 1745,0912 1106,6432 638,448 SFP+ for TA12XG (10km) 122,57 € 1 118,8929 100,5074 63,7364 36,771 SFP+ for TA12XG (40km) 524,20 € 1 508,474 429,844 272,584 157,26 XFP for TU40G (300m) 295,48 € 1 286,6156 242,2936 153,6496 88,644 XFP for TU40G (10km) 251,71 € 1 244,1587 206,4022 130,8892 75,513 XFP for TU40G (40km) 683,98 € 1 663,4606 560,8636 355,6696 205,194 XFP for TU40G (80km) 1.313,24 € 1 1273,8428 1076,8568 682,8848 393,972 XFP for TU40G DWDM (100 GHz spacing) 1.143,62 € 1 1109,3114 937,7684 594,6824 343,086 QSFP28 for TU100G (10km) 4.750 € 1 4607,5 3895 2470 1425 SFP for TA48GE (10 km) 91,36 € 1 88,6192 74,9152 47,5072 27,408 SFP for TA48GE (40 km) 138,94 € 1 134,7718 113,9308 72,2488 41,682 For the outside plant, as stated in D5.2, we need to consider the additional price of a AWG, which is the main difference to a GPON/P2P current deployment. The cost of a 90-port athermal AWG should be below 3,000 EUR in a mass production scenario.
Central Office (CO. The Local Exchange Carrier facility where access lines are connected to switching equipment for connection to the Public Switched Telephone Network.
Central Office (CO. The equipment at the CO provides interconnection with Point-of-Presence (PoP), where each Service Provider will interconnect their equipment to the core network. Thus, the functionality of the equipment at the CO is to aggregate the traffic coming from the different XXXx and distribute it to each Service Provider depending on the labelling of each flow. As stated in D5.2, the CO equipment is an Ethernet aggregation device, using an off-the-shelf OLT, and it can be seen as an ARN without customer ports but with several 10G/100G interfaces, to interconnect both, uplinks to the PoP/SPs and XXXx. Depending on where the PoP is located, the OLT will just forward the traffic from the XXXx to the PoP or will aggregate it to deliver it to the different SPs. The cards that the OLT will have are: • Switching fabric: a non-blocking backplane is required to interconnect the different XXXx to the PoP; • Downlink cards: 10/100G interfaces to interconnect the OLT to the XXXx; • Uplink cards: 10/100 interfaces to connect the OLT with the PoP and deliver the traffic to the different SPs. As the number of XXXx connected to the CO is predicted to be high, a modular OLT with different cards will be the preferred choice. This allows us to have a scalable platform, which can grow at the same time new XXXx are deployed and also guarantees the investment, as new cards with new features can be installed. From the powering perspective, the OLT should provide two powering lines for redundancy purposes at 48Vcc. Mechanically, the form factor of a SODALES OLT will be similar to present GPON/P2P OLTs. Figure 2: Typical OLT configuration, to interconnect XXXx to the PoP SODALES proposes several architectures to interconnect the OLTs with the XXXx. The basic one is by means of a WDM-PON. WDM-PON outside plant requires the use of AWGs, which are passive devices that will be installed in the field. Figure 3: Basic WDM-PON architecture to interconnect the XXXx to the OLT From the CO perspective, the use of a WDM-PON architecture means that the pluggable optics at the OLT need to be coloured. As is presented in the next section, this will increase the cost of the equipment at the CO but has no other implication regarding the implementation of the solution.
Central Office (CO. Transfer A service provided by the Central Office that allows an established call to be transferred to another location.
