Specifications

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Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide for SCCP (version 3.0)
OL-4652-01
Chapter 5 Parameters and Defaults
Operational Parameters
TOS
Description
This parameter allows you to configure Type of Service (ToS) bits by specifying the precedence and
delay of audio and signaling IP packets, as follows:
• Bits 0-7—These bits are for the ToS value for voice data packets.
– Range: 0-255
– Default: 184
• Bits 8-15—These bits are for the ToS value for signaling-data packets
– Range: 0-255
– Default: 168
• Bits 16-31—Reserved.
Value Type
Bitmap
Default
0x000068B8
Voice Configuration Menu Access Code
255
Note This parameter is called UDPTOS in previous Cisco ATA releases. If you are performing a Cisco ATA
upgrade, the previous value of the UDPTOS parameter is carried forward to the TOS parameter.
8-10 Reserved.
11 If Bit 11=0, the Cisco ATA requests the device hostname from the DHCP server.
If Bit 11=1, the Cisco ATA uses the device hostname that is specified in DHCP option 12.
Default: 0
12 Reserved.
13 If Bit 13=0 (default), use statically configured DNS IP addresses, if available, for name resolution. If statically
configured DNS servers are not available, use DHCP-provided DNS IP addresses for name resolution.
If Bit 13=1, use both statically configured DNS IP addresses and as many as two DHCP-provided DNS IP
addresses. Therefore, the Cisco
ATA can query as many as four DNS IP addresses in one DNS query.
For more information about statically configured DNS IP addresses, see the “DNS1IP” section on page 5-10
and the “DNS2IP” section on page 5-11.
Default: 0
14-31 Reserved.
Table 5-4 OpFlags Parameter Operational Features to Turn On or Off (continued)
Bit Number Definition