| Physical Interfaces |
| E1/T1 Ports :4/8/12/16/20 E1/T1 |
| DTU Module :4 E1/T1 |
| Interface Type :RJ48(Impedance 120Ω) |
| Ethernet Interface |
| GE1: 10/100/1000 BaseT Adaptive Ethernet |
| GE0: 10/100/1000 BaseT Adaptive Ethernet |
| Serial Port :1* RS232, 115200bps |
| Voice Capabilities |
| •Codecs:G.711a/μ law,G.723.1, G.729A/B, iLBC, AMR |
| •Silence Suppression |
| •Comfort Noise |
| •Voice Activity Detection |
| •Echo Cancellation (G.168),with up to 128ms |
| •Adaptive Dynamic Buffer |
| •Voice ,Fax Gain Control |
| • FAX:T.38 and Pass-through |
| •Support Modem/POS |
| •DTMF Mode: RFC2833/Signal/Inband |
| •Clear Channel/Clear Mode |
| PSTN |
| •Power: input:100-240V,50-60Hz output:12VDC,1.0A |
| •Temperature(operation): 0 ℃~ 45 ℃ |
| •(storage): -20 ℃~80 ℃ |
| •Operation Humidity: 10%-90% no condensation |
| •Dimension(w/D/H): 225*150*38mm |
| •Weight: 0.75kg |
| Protocol |
| •ISDN PRI |
| 23B+D(T1),30B+D(E1),NT or TE |
| ITU-T Q.921, ITU-T Q.931, Q.Sig |
| •Signal 7/SS7 |
| ITU-T, ANSI,ITU-CHINA |
| MTP1/MTP2/MTP3, TUP/ISUP |
| •E1 Frame Type : DF,CRC-4,CRC_ITU |
| •T1 Frame Type :
4-Frame Multi-frame (F4,FT),2-Frame Multi-frame (F12, D3/4),Extended Super-frame (F24, ESF) ,Remote Switch Mode (F72, SLC96) |
| •Line Codes: |
| E1:NRZ,CMI,AMI,HDB3 |
| T1:NRZ,CMI,AMI,B8ZS |
| •Clock:Local/Remote Clock Source |
| VoIP Protocol |
| •SIP v2.0 (UDP/TCP),RFC3261 |
| SDP,RTP(RFC2833), RFC3262, |
| 3263,3264,3265,3515,2976,3311 |
| •RTP/RTCP, RFC2198, 1889 |
| •SIP-T,RFC3372, RFC3204, RFC3398 |
| •SIP Trunk Work Mode :Peer/Access |
| •SIP/IMS Registration :with up to 256 SIP Accounts |
| •NAT: Dynamic NAT, Rport |