... MGCP V1.0 protocolsStandard G.711A/U,G.723.1,G.729A/B codeCall forwarding, Call hold, Caller ID, DND standard ... lengthVoice CodecG.711 a-law/μ-law, G.723.1, G.729A/B, G.168 and PCMA/PCMUFax standardT.38/pass ... through baud rate:1.44kbpsIP TransportTCP/UDP, ARP/RARP, NTP, ... .0 protocols Standard G.711A/U,G.723.1,G.729A/B,G.168,PCM A/U code Call forwarding, ...