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Universal Network Terminal TAU-32M.IP 111
–
Intercept port range
–range of network ports used for pickup traffic transmission (SORM):
Intercept port min
–the lower limit of a range of ports used for pickup traffic transmission (SORM
feature);
Intercept port max
–the upper limit of a range of ports used for pickup traffic transmission (SORM
feature).
SORM feature implementation is based on
rfc3924 recommendation–Cisco Architecture for
Lawful Intercept in IP Networks.
To perform the pickup, the following MIBs are used: CISCO-IP-
TAP-MIB.my and CISCO-TAP2-MIB.my.
–
Diffserv configuration;
DSCP for SIP
–type of service for SIP packets. DSCP bits are the 6 high bits of the Diffserv field that is
sent in IP protocol header; parameter value should be specified decimally. For utilized values, see
Table 8;
–
Other:
Verify remote media address
–when checked, apply control to the media traffic received, otherwise it
will not be controlled. This function controls the received media traffic (voice traffic, T38 fax) for
established connection. If this traffic comes in from the host or port not specified in SIP/H.323
signalling exchange, it will be rejected.
To avoid the conflicts, ports used by H.225/H.245/RAS signalling and RTP should not overlap the
ports used by SIP signalling (5060 by default, and also ports configured in 'ports' and 'serial
groups' tabs.)
Table 8 – 'Type of service' (DSCP) field value
DSCP parameter value
Description
0 (0x00)
Best effort – default value
8 (0x08)
Class 1
10 (0x0A)v
Assured forwarding, low drop precedence (Class1, AF11)
12 (0x0C)
Assured forwarding, low drop precedence (Class1, AF12)
14 (0x0E)
Assured forwarding, low drop precedence (Class1, AF13)
16 (0x10)
Class 2
18 (0x12)
Assured forwarding, low drop precedence (Class2, AF21)
20 (0x14)
Assured forwarding, low drop precedence (Class2, AF22)
22 (0x16)
Assured forwarding, low drop precedence (Class2, AF23)
24 (0x18)
Class 3
26 (0x1A)
Assured forwarding, low drop precedence (Class3, AF31)
28 (0x1C)
Assured forwarding, low drop precedence (Class3, AF32)
30 (0x1E)
Assured forwarding, low drop precedence (Class3, AF33)
32 (0x20)
Class 4
34 (0x22)
Assured forwarding, low drop precedence (Class4, AF41)
36 (0x24)
Assured forwarding, low drop precedence (Class4, AF42)
38 (0x26)
Assured forwarding, low drop precedence (Class4, AF43)
40 (0x28)
Class 5
46 (0x2E)
Expedited forwarding, low drop precedence (Class5, Expedited Forwarding)
IP Precedence:
0 (0x00)
IPP0 (Routine)
8 (0x08)
IPP1 (Priority)
16 (0x10)
IPP2 (Immediate)