What protocols does the MultiVOIP or Gatekeeper support?

Protocols:
H.323 V4, SIP, H.450.2-H.450.4, H.450.6&H.450.8, RTP, RTCP, SMTP, Q.931, T.38&Group 3 fax relays, Q.Sig , SPP (single port protocol)

Bandwidth Management:
G.711, G.723, G.726, G.727, G.729&proprietary voice compression, silence suppression, VAD, CNG

Voice Quality:
DiffServ, G.165, G.168, adaptive echo cancellation, forward error correction, bad frame interpolation, tunable latency, dynamic jitter buffers

Please see our Web site at: http://www.multitech.com/en_US/DOCUMENTS/Collateral/data_sheets/