DRAFT
© 2003 - 2005 Sipura Technology, Inc
Proprietary (See Copyright Notice on Page 2)
45
Retry Reg RSC
Interval to wait before the SPA retries registration
again after encountering a failure condition during
last registration
Time0 30
RTP Parameters
Parameter Name
Description
Type
Default
RTP Port Min
2
Minimum port number for RTP transmission and
reception
Port 16384
RTP Port Max
2
Maximum port number for RTP transmission and
reception
Port 16482
RTP Packet Size
Packet size in sec. Valid values must be multiple of
0.01s. Range: 0.01 – 0.16
Time3 0.03
Max RTP ICMP Err
Number of successive ICMP errors allowed when
transmitting RTP packets to the peer before the
SPA will terminate the call. If value is set to 0, the
SPA will ignore the limit on ICMP errors.
Uns32 0
RTCP Tx Interval
4
Controls the interval (sec) to send out RTCP
sender report on an active connection.
Range: 0 – 255 (s)
Time0 0
Notes:
1. Reorder or Busy Tone will be played by default for all unsuccessful response status code
2. <RTP Port Min> and <RTP Port Max> should define a range that contains at least 4 even number
ports, such as 100 – 106
3. If inbound SIP requests contain compact headers, SPA will reuse the same compact headers when
generating the response regardless the settings of the <Use Compact Header> parameter. If
inbound SIP requests contain normal headers, SPA will substitute those headers with compact
headers (if defined by RFC 261) if <Use Compact Header> parameter is set to “yes.”
4. During an active connection, the SPA can be programmed to send out compound RTCP packet on
the connection. Each compound RTP packet except the last one contains a SR (Sender Report) and
a SDES.(Source Description). The last RTCP packet contains an additional BYE packet. Each SR
except the last one contains exactly 1 RR (Receiver Report); the last SR carries no RR. The SDES
contains CNAME, NAME, and TOOL identifiers. The CNAME is set to <User ID>@<Proxy>, NAME is
set to <Display Name> (or “Anonymous” if user blocks caller ID), and TOOL is set to the
Verdor/Hardware-platform-software-version
(such as Sipura/SPA2000-1.0.31(b)). The NTP
timestamp used in the SR is a snapshot of the SPA’s local time, not the time reported by an NTP
server. If the SPA receives a RR from the peer, it will attempt to compute the round trip delay and
show it as the <Call Round Trip Delay> value (ms) in the Info section of SPA web page.
Dynamic Payload Types
Parameter Name
Description
Type
Default
AVT Dynamic Payload
1,2
AVT (DTMF tones) dynamic payload type
Uns8
101
INFOREQ Dynamic Payload
If this value is not blank, the SPA will include X-
nt-inforeq in the SDP to indicate support of INFO
method for out-of-band DTMF transmission (per
Nortel MCS specification). The recommended
value to use is 111
Uns8
G726r16 Dynamic Payload
1,2
G726-16 dynamic payload type
Uns8
98
G726r24 Dynamic Payload
1,2
G726-24 dynamic payload type
Uns8
97
G726r40 Dynamic Payload
1,2
G726-40 dynamic payload type
Uns8
96
G729b Dynamic Payload
1,2
G729b dynamic payload type
Uns8
99
Notes:
