Buy Yeastar TE Series E1/T1/PRI VoIP Gateways in Pakistan. Software configurable E1/T1/J1 ports, up to 60 simultaneous VoIP to ISDN calls. Connect existing ISDN PBX to VoIP with TE100 and TE200 models. Official distributor in Lahore, Karachi, Islamabad. https://ar.com.pk/yeastar-products/yeastar-te-e1-t1-pri-voip-gateways-pakistan