ATM Option System Reference - Comtech EF Data
ATM Option System Reference - Comtech EF Data
ATM Option System Reference - Comtech EF Data
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<strong>ATM</strong> <strong>Option</strong><br />
5.4 AAL1 Mode<br />
5.4.1 Number of subchannels<br />
5.4.2 Super frame format<br />
NOTE: AAL1 mode parameters that are common to other PVC modes are listed under<br />
“<strong>ATM</strong>PVCR Mode” on page 5-4.<br />
Specifies how many voice subchannels are assigned to this PVC. This determines the<br />
number of voice connections that are supported by this AAL1 transport service.<br />
• Each subchannel uses 75 Kbps of bandwidth.<br />
• A maximum of 24 subchannels is allowed on an E1 connection.<br />
• A maximum of 20 subchannels is allowed on a T1 connection.<br />
Specifies the superframe format to be used for AAL1. Choices for North America are:<br />
• DS1-SF: Superframe, with 12 frames and 2-bit (AB) signaling,<br />
• DS1-ESF: Extended superframe, with 24 frames and 4-bit (ABCD) signaling.<br />
The value E1 is used in other countries.<br />
5.4.3 Local inbound voice level (db)<br />
Console SNMP Text-based Config<br />
Number of subchannels atmpvcVoiceNbSubChannel<br />
Values: 0 - 24<br />
Default: 1<br />
[atmpvc#] VoiceNbSub-<br />
Channel<br />
Console SNMP Text-based Config<br />
Super frame format atmpvcVoiceFrame-Format<br />
Values: DS1-SF, DS1-ESF, E1<br />
Default: DS1-SF<br />
[atmpvc#] VoiceFrame-<br />
Format<br />
Console SNMP Text-based Config<br />
Local Inbound voice level<br />
(db)<br />
atmpvcVoiceLocalInbound<br />
[atmpvc#]VoiceLocalInbound<br />
Specifies the local voice level going into the port, measured in 1 dB increments. The value<br />
5-22 Memotec Inc.
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