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Chapter 21 Product Specifications
User’s Guide
249
Caller ID The WiMAX Modem supports caller ID, which allows you to see the
originating number of an incoming call (on a phone with a suitable
display).
REN A Ringer Equivalence Number (REN) is used to determine the number
of devices (like telephones or fax machines) that may be connected
to the telephone line. Your device has a REN of three, so it can
support three devices per telephone port.
QoS (Quality of
Service)
Quality of Service (QoS) mechanisms help to provide better service
on a per-flow basis. Your device supports Type of Service (ToS)
tagging and Differentiated Services (DiffServ) tagging. This allows
the device to tag voice frames so they can be prioritized over the
network.
SIP ALG Your device is a SIP Application Layer Gateway (ALG). It allows VoIP
calls to pass through NAT for devices behind it (such as a SIP-based
VoIP software application on a computer).
Other Voice
Features
SIP version 2 (Session Initiating Protocol RFC 3261)
SDP (Session Description Protocol RFC 2327)
RTP (RFC 1889)
RTCP (RFC 1890)
Voice codecs (coder/decoders) G.711, G.726, G.729
Fax and data modem discrimination
DTMF Detection and Generation
DTMF: In-band and Out-band traffic (RFC 2833),(PCM), (SIP INFO)
Point-to-point call establishment between two IADs
Quick dialing through predefined phone book, which maps the phone
dialing number and destination URL.
Flexible Dial Plan (RFC3525 section 7.1.14)
Table 113 Star (*) and Pound (#) Code Support
*0 Wireless Operator Services
*2 Customer Care Access
*66 Repeat Dialing
*67 Plus the 10 digit phone number to block Caller ID on a single call
basis
*69 Return last call received
*70 Followed by the 10 digit phone number to cancel Call Waiting on a
single call basis
*72 Activate Call Forwarding (*72 followed by the 10 digit phone number
that is requesting call forwarding service)
*720 Activate Call Forwarding (*720 followed by the 10 digit phone
number that is requesting deactivation of call forwarding service)
*73 Plus the forward to phone number to activate Call Forwarding No
Answer (no VM service plan)
Table 112 Voice Features