IP Resources Attributes

Overview

You can assign attributes to a VoIP module during initial configuration by using the Resource Attribute Configure message.

You can assign attributes during call set-up by using the Route Control or Outseize Control messages with Address Information Blocks (AIBs).

You can dynamically assign some attributes to a channel after call setup by using the Resource Attribute Configure message with the span/channel AIB.

Synchronizing VoIP Media Parameters

If you change VoIP resource configuration with the Resource Attribute Configure message, the local copy of the configuration maintained by SIP and H.323 software remains unchanged. You synchronize the configurations as follows:

CSA users select the Resynchronization option.

Non-CSA users send the Resynchronize VoIP Media Parameters TLV (0x0284) in the VoIP Protocol Configure (0x00EE) message. Refer to the 0x0284 Resynchronize VoIP Media Parameter in the API Reference for the details of this TLV.

IP Resource Attributes Summary Table

The following tables show the default values for IP Resource Attributes and indicate if you can configure them dynamically on an active connection.

Table 2-2 General Attributes

 

TLV Tag and Name

 

Default Setting

Dynamic Configuration Supported

0x01D0 Gateway Mode

Non Port Consuming

No

0x01D4 Type of Service

See TLV Format

Yes

0x01DF UDP Source Port Validate

Enabled

Yes

0x01EB RTP Timer Timeout

Disabled

No

0x01EC Media Inactivity Detection Timer

Disabled

No

Table 2-3 Fax Attributes

 

TLV Tag and Name

 

Default Setting

Dynamic Configuration Supported

0x01C5 Fax Type Enable

Disabled

No

0x01C7 Fax Bypass Coder Type

Disabled

No

0x01D2 Fax Payload Redundancy

Disabled

No

0x01E1 Fax Compatibility Mode

Backward compatible mode

No

0x01E6 Source T.38 Port

No default

Yes

0x01E7 Destination T.38 Port

No default

Yes

0x01E8 Source RTCP Port

One offset from source RTP port

Yes

0x01E9 Destination RTCP Port

One offset from destination RTCP port

Yes

Table 2-4 Voice Attributes

 

TLV Tag and Name

 

Default Setting

Dynamic Configuration Supported

0x0100 RTP Payload Type (VDAC-ONE)

G.711µ-Law

Only between G.723 5.3 Kbps and G.723 6.3 Kbps

0x0101 RTP Payload Size (VDAC-ONE)

1X

Yes

0x0102 RTP Silence Suppression

Disabled

Yes

0x0103 RTP Echo Cancellation

Enabled

Yes

0x01C2 Minimum Jitter Buffer Delay

75 ms

No

0x01C3 Maximum Jitter Buffer Delay

150 ms

No

0x01C4 Adaptation Rate

7

No

0x01D1 RTP Payload Redundancy

Disabled

No

0x01DB Connection Mode

See the TLV format.

Yes

0x01E2 RFC 2833 Enable

Disabled

No

0x01E8 Source RTCP Port

One offset from destination RTP port

Yes

0x01E9 Destination RTCP Port

One offset from destination RTP port

Yes