• Kodi Wolamulira wa Border wa Session (SBC) ndi chiyani?
Session Border Controller (SBC) ndi chinthu cha netiweki chomwe chimagwiritsidwa ntchito kuteteza ma netiweki opangidwa ndi SIP pogwiritsa ntchito Internet Protocol (VoIP). SBC yakhala muyezo wa ntchito za telefoni ndi multimedia za NGN / IMS.
| Gawo | Malire | Wowongolera |
| Kulankhulana pakati pa magulu awiri. Uwu ungakhale uthenga wodziwitsa anthu pafoni, mawu, kanema, kapena deta ina pamodzi ndi chidziwitso cha ziwerengero za mafoni ndi khalidwe lake. | Malo olekanitsira pakati pa gawo limodzi la netiweki ndi ina. | Mphamvu yomwe olamulira malire a gawo ali nayo pa mitsinje ya deta yomwe imaphatikizapo magawo monga chitetezo, muyeso, kuwongolera mwayi wopeza, njira yolumikizirana, njira, ma signaling, media, QoS ndi malo osinthira deta pama foni omwe amawongolera. |
| Kugwiritsa ntchito | Topology | Ntchito |
• N’chifukwa chiyani mukufunikira SBC?
Mavuto a IP Telephony
| Mavuto Okhudzana ndi Kulumikizana | Mavuto Ogwirizana | Nkhani Zachitetezo |
| Palibe mawu / mawu olowera mbali imodzi omwe amayambitsidwa ndi NAT pakati pa ma sub-network osiyanasiyana. | Mwatsoka, kugwirizana pakati pa zinthu za SIP ndi ogulitsa osiyanasiyana sikutsimikizika nthawi zonse. | Kulowerera muutumiki, kumvetsera zinthu mobisa, kukana kuukira kwautumiki, kuletsa deta, chinyengo cha pa intaneti, ndi mapaketi osagwira bwino ntchito a SIP kungakubweretsereni mavuto ambiri. |
Mavuto Okhudzana ndi Kulumikizana
NAT imasintha IP yachinsinsi kukhala IP yakunja koma singathe kusintha IP ya gawo la pulogalamu. Adilesi ya IP yofikira ndi yolakwika, motero singathe kulumikizana ndi ma endpoint.
NAT Transversal
NAT imasintha IP yachinsinsi kukhala IP yakunja koma singathe kusintha IP ya gawo la pulogalamu. SBC imatha kuzindikira NAT, kusintha adilesi ya IP ya SDP. Chifukwa chake, kupeza adilesi yolondola ya IP ndipo RTP imatha kufika kumapeto.
Wolamulira wa Session Border amagwira ntchito ngati wothandizira magalimoto a VoIP
Nkhani Zachitetezo
Chitetezo cha Kuukira
Q: N’chifukwa chiyani Wolamulira wa Gawo la Malire akufunika pa ziwopsezo za VoIP?
A: Machitidwe onse a kuukira kwa VoIP amagwirizana ndi njira yogwiritsira ntchito, koma machitidwewo ndi osazolowereka. Mwachitsanzo, ngati kuchuluka kwa mafoni kuli kokwera kwambiri, kungawononge zomangamanga za VoIP yanu. Ma SBC amatha kusanthula gawo la pulogalamuyo ndikuzindikira machitidwe a ogwiritsa ntchito.
Chitetezo Chodzaza Zinthu
Q: N’chiyani chimayambitsa kuchuluka kwa magalimoto?
A: Zochitika zotentha ndi zomwe zimayambitsa mavuto ambiri, monga kugula zinthu ziwiri ku China (monga Black Friday ku USA), zochitika zambiri, kapena ziwopsezo zomwe zimachitika chifukwa cha nkhani zoipa. Kuchuluka kwadzidzidzi kwa kulembetsa komwe kumachitika chifukwa cha kulephera kwa magetsi pakati pa data, kulephera kwa netiweki ndi komwe kumayambitsa mavuto ambiri.
Q: kodi SBC imaletsa bwanji kuchuluka kwa magalimoto?
A: SBC imatha kugawa magalimoto mwanzeru malinga ndi mulingo wa ogwiritsa ntchito komanso zomwe bizinesi ikufuna, ndi kukana kwambiri kuchuluka kwa magalimoto: kuchulukitsa katatu, bizinesi sidzasokonezedwa. Ntchito monga kuchepetsa kuchuluka kwa magalimoto/kuwongolera, mndandanda wakuda wamphamvu, kuchepetsa kulembetsa/kuyitanitsa ndi zina zotero zilipo.
Mavuto Ogwirizana
Kugwirizana pakati pa zinthu za SIP sikutsimikizika nthawi zonse. Ma SBC amapangitsa kuti kulumikizana kukhale kosalala.
Q: Nchifukwa chiyani mavuto okhudzana ndi kugwirira ntchito limodzi amapezeka pamene zipangizo zonse zimagwirizana ndi SIP?
A: SIP ndi muyezo wotseguka, ogulitsa osiyanasiyana nthawi zambiri amakhala ndi matanthauzidwe ndi magwiridwe antchito osiyanasiyana, zomwe zingayambitse kulumikizana ndi
/kapena mavuto a mawu.
Q: Kodi SBC imathetsa bwanji vutoli?
A: Ma SBC amathandizira kusinthasintha kwa SIP kudzera mu uthenga wa SIP ndi kusintha kwa mutu. Kufotokozera kokhazikika komanso kuwonjezera/kuchotsa/kusintha komwe kungakonzedwe kulipo mu Dinstar SBCs.
Ma SBC amatsimikizira Ubwino wa Utumiki (QoS)
Kuyang'anira machitidwe osiyanasiyana ndi ma multimedia n'kovuta. Kuyendetsa bwino njira
N'zovuta kuthana ndi kuchuluka kwa anthu omwe amaonera zinthu zosiyanasiyana, zomwe zimapangitsa kuti anthu ambiri azivutika.
Unikani mafoni a mawu ndi kanema, kutengera machitidwe a ogwiritsa ntchito. Kuwongolera mafoni
kasamalidwe: Kutumiza uthenga mwanzeru kutengera woyimba, magawo a SIP, nthawi, QoS.
Pamene netiweki ya IP siili yokhazikika, kutayika kwa paketi ndi kuchedwa kwa jitter zimayambitsa khalidwe loipa
ya utumiki.
Ma SBC amawunika mtundu wa kuyimba kulikonse nthawi yeniyeni ndipo amachitapo kanthu mwachangu
kuonetsetsa kuti QoS ikugwira ntchito.
Wolamulira wa Malire a Gawo/Firewall/VPN