PSTN
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
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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/In-band Clear
Channel/Clear Mode
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