... G.711 a-law/μ-law, G.723.1, G.729A/B DTMF Mode RFC2833, SIP INFO, INBAND FAX over IP T ... IVR, CRBT IVR ( FXO only ). Color Ring Back Tone Customizable Standard Services Caller ID, Call Transfer, Call Hold, Call Forward, Call ... EMC CE LVD EN60950-1: 2006 FCC part 15 Class B CE Mark (EN55022 Class B, EN60950, EN55024, EN300 386) ORDERING INFORMATION VJ-1S1P ...