ABSTRAKSI: Today Optional Northern Route network of Link between Surabaya – Denpasar uses Synchronous Digital Technology (SDH) that has capacity of STM-4 with Add/Drop Multiplexer-600 (ADM-600) as the multiplexing - demultiplexing element. The transition needs of Plain Old Telephony Services (POTS) to Non-POTS that increase exponentially are the consequences of telecommunication and information technology progress which caused higher channel demand that need a reanalysis of optional Northern Route network for the following six years. This final project analyzes the network for its capability of fulfilling the channel demand estimation in the year 2008 with identification existing condition of optional part of Northern Route link between Surabaya – Denpasar. The analysis is continued with choosing the transport technology that will be implemented based on existing fiber optic core using consideration, comparison of several levels SDH system with Wavelength Division Multiplexing (WDM), comparison of the limitation distance for dispersion of Standard Single Mode Fiber (SSMF) and Non Zero Dispersion Shifted Fiber (NZDSF). The result of this final project analysis are the new configuration of optional part of northern route network using NZDSF fiber optic, SDH transport technology using two STM-64 equipments, seven EDFA’s using 24 dB gain, three DCF’s that are inserted in the network and the application of Bidirectional Self Healing Ring (BSHR) as the protection system.Kata Kunci : -ABSTRACT: Jaringan Optional Northern Route link Surabaya – Denpasar saat ini menggunakan teknologi Synchronous Digital Hierarchy (SDH) yang memiliki kapasitas STM-4 dengan elemen multiplex Add/Drop Multiplexer-600 (ADM-600). Kemajuan teknologi informasi dan telekomunikasi yang menyebabkan kebutuhan kanal semakin besar, sehingga diperlukan suatu analisis jaringan optional Northern Route untuk enam tahun mendatang. Proyek akhir ini mengkaji jaringan atas kesanggupannya memenuhi estimasi kebutuhan kanal pada tahun 2008 dengan melakukan identifikasi kondisi existing jaringan optional Northern Route link Surabaya – Denpasar. Kemudian dilakukan pemilihan teknologi transport yang akan diimplementasikan sesuai dengan pertimbangan utilitas pemakaian core serat optik exsisting, perbandingan beberapa level sistem SDH dan Wavelength Division Multiplexing (WDM), perbandingan jarak berbatas dispersi dari serat optik Standard Single Mode Fiber (SSMF) dan Non Dispersion Shifted Fiber (NZDSF). Hasil kajian proyek akhir ini adalah konfigurasi jaringan optional Northern Route link Surabaya – Denpasar yang baru menggunakan serat optik NZDSF, teknologi transport SDH menggunakan 2 perangkat STM-64, 7 EDFA yang memakai G = 24 dB, 3 DCF yang disisipkan pada jaringan dan penerapan Bidirectional Self Healing Ring (BSHR) sebagai sistem proteksinya.Keyword: -