all four PoE ports combined. This made them entirely suitable for VoIP and other low-power use (Motorola Canopy or security camera or Wi-Fi APs) typical of a SOHO application, or supporting an 8-line PBX, especially in combination with a multi-line handset such as the Panasonic KX-TGP (which does not require a powered port). Accordingly, by the end of 2011, for under US$3000 it was possible to build an office VoIP system based entirely on cordless technology capable of several hundred metres reach and on Power over Ethernet dedicated wired phones, with up to 8 DID lines and 3 simultaneous conversations per base station, with 24 handsets each capable of communicating on any subset of the 8 lines, plus an unlimited number of softphones running on computers and laptops and smartphones. This compared favourably to proprietary PBX technology especially as VoIP cordless was far cheaper than PBX cordless. Cisco also released the SPA112, an Analogue Telephone Adapter (ATA) to connect one or two standard RJ-11 telephones to an Ethernet, in November 2011, retailing for under US$50. This was a competitive response to major cordless vendors such as Panasonic moving into the business VoIP cordless market Cisco had long dominated, as it suppressed the market for the cordless makers' native VoIP phones and permitted Cisco to argue the business case to spend more on switches and less on terminal devices. However, this solution would not permit the analogue phones to access every line of a multi-line PBX, only one hardwired line per phone. As of late 2011, most cellular data networks were still extremely high latency and effectively useless for VoIP. IP-only providers such as Voipstream had begun to serve urban areas, and alternative approaches such as OpenBTS (open source GSM) were competing with mobile VoIP. In November 2011, Nokia introduced Nokia Asha 303 with integrated SIP VoIP client that can operate both over Wi-Fi and 3G networks. 2012 In February 2012, Nokia introduced Nokia Asha 302 and in June Nokia Asha 311 both with integrated SIP VoIP client that can operate both over Wi-Fi and 3G networks. 2014 By September 2014, mobile-enabled VoIP (VoLTE) had been launched by T-Mobile US across its national network and by AT&T Mobility in a few markets. Verizon plans to launch its VoLTE service "in the coming weeks," according to media reports in August, 2014. It provides HD Voice, which increases mobile voice quality, and permits