Before you configure Frame Relay encapsulation on an interface, you must verify that all prior Layer 3 configuration is removed from that interface. For example, you must ensure that there is no IP address configured directly under the main interface; otherwise, any Frame Relay configuration done under the main interface will not be viable.
Use the following formula to calculate the maximum number of PVCs supported on a card:. Note The default setting of the mtu command for a serial interface is bytes. To configure a synchronous serial interface, perform the tasks in the following sections. Each task in the list is identified as either required or optional. To specify a synchronous serial interface and enter interface configuration mode, use the following commands in global configuration mode.
Specifies the serial interface and enters interface configuration mode. The serial interfaces support the following serial encapsulation methods:. To define the encapsulation method, use the following command in interface configuration mode. Encapsulation methods are set according to the type of protocol or application you configure in the Cisco IOS software.
You can use the physical-layer async command to change the interface mode from the default synchronous mode to asynchronous mode. Specifies the mode of a low-speed interface as either synchronous or asynchronous. Note You cannot use the physical-layer async command for frame-relay encapsulation. When you make a transition from asynchronous mode to synchronous mode in serial interfaces, the interface state becomes down by default. You should then use the no shutdown option to bring the interface up.
This example shows how to configure frame relay encapsulation on a serial interface. This example shows how to configure Multilink PPP on a serial interface. This example shows how to configure a serial interface on asynchronous mode. Skip to content Skip to search Skip to footer. Book Contents Book Contents. Find Matches in This Book. PDF - Complete Book 1. Updated: February 6, Default is hdb3.
T1 only. Sets the facility data link fdl exchange standard for T1 interfaces using esf framing. Default is ansi. To disable fdl, enter the no fdl command. The clock source i nternal command is only applicable with the channel-group command and the pri-group for data command.
The cablelength long command attenuates the pulse from the transmitter using pulse equalization and line build-out. This command applies to cables longer than feet. Loss values are:. The cablelength short command sets transmission attenuation for cable lengths of feet or less. When you use the cablelength short command, specify the length as follows:.
E1 only. Sets the six required national bits in E1 in the G. Defines a severely errored second by specifying the number of CRC errors that must occur in one second to reach the severely errored second state. Default is Enables generation and detection of yellow alarms. Default condition is that generation and detection of yellow alarms are enabled. Use the no form of the command to disable yellow alarm detection. Specifies the codec complexity based on the codec standard that you are using.
The number of calls that is supported on the router is dependent on the DSP density and the codec complexity. The number of supported calls varies depending on the codec that is used for a call. In this mode, oversubscription of DSPs is possible. If reservations are needed for certain applications such as CAMA E calls, you can enable the reservation-fixed option. There is no reservation by default.
The keyword that you specify for the codec complexity command affects the codecs available when you use the codec dial peer voice configuration command.
If you select a codec that is not available, an error message appears. You cannot change codec complexity while DS0 groups are defined. If they are already set up, follow these steps:. Enter the voice-card slot command, and then change the codec complexity. Valid values for slot is 0, subslot is 1 to 3, and port is 0 to 7.
The frame type for T1 controllers can be specified as sf for superframe or esf for extended superframe. The frame type for E1 controllers can be specified as crc4 or no-crc4. Line-code value for T1 can be ami or b8zs. Line-code value for E1 can be ami or hdb3. Defines the T1 channels for use by compressed voice calls and the signaling method that the router uses to connect to the PBX or central office.
Set up DS0 groups after you have specified codec complexity in the voice-card configuration. Although only one voice port is created, applicable calls are routed to any channel in the group. The timeslot-list argument is a single number, numbers separated by commas, or a pair of numbers separated by a hyphen to indicate a range of time slots. The signaling method selection for the type keyword depends on the connection that you are making:.
Specifies the clock source. For voice, you can select either line or network. If internal clocking is required on the network interface module, configure clock source network. When both a primary port and a secondary port are configured and the primary port fails, the PLL switches over to the secondary. The tdm-group-no argument identifies the TDM group and is a value from 0 to 23 for T1 and from 0 to 30 for E1.
The timeslot-range argument indicates a range of time slots and is a single number, numbers separated by commas, or a pair of numbers separated by a hyphen. The valid range is from 1 to 24 for T1 and from 1 to 31 for E1. The signaling method selection for the type keyword depends on the connection that you are making. The fxs and fxo options allow you to specify a ground-start or loop-start line. The slot-number argument identifies the slot where the NIM is installed. Valid entries are from 0 to 3.
The subunit-number argument identifies the subunit on the NIM where the voice port is located. Valid entries are 0 or 1. The port argument identifies the voice port number. Valid entries are 0 and 1. The slot argument is the slot in which the voice port adapter is installed.
The port argument is the voice interface card location. Valid entries are 0 to 3. The ds0-group-number argument indicates the defined DS0 group number. Each defined DS0 group number is represented on a separate voice port.
The isdn incoming-voice voice command is not required for interface serial interface configuration. When you use the pri-group command for data, then the voice-dsp keyword is not required.
When you use the pri-group command for voice, then the voice-dsp keyword is required. If a controller is configured as PRI, individual channel groups cannot be configured on that controller. The controller command must be entered before this command can be used. Enters voice-card configuration mode for the network module on which you want to enable DSP-farm services. This is a known non-service-impacting limitation and does not affect any other behavior.
You can record the call by sending a copy of the media streams to the recording server. When you send a copy of the media streams to the recording server, the TDM gateway acts a session recording client, which uses SIP protocol to communicate the recording metadata with the recording server.
This call instance that is created between the recording client and recording server is called the recording session. The recording metadata contains the description of the communication session along with the participants of the call and details of the media streams. The recording session comprises of two media streams forked by DSP, one is the near-end stream that enters into the analog phone, and the other far-end stream that is sent to the IP cloud IP phone in the diagram below.
As the Media Recording feature supports a feature based license, in addition to the existing UC license, you must register to the Smart Licensing portal. Once the feature is registered and the associated license request is granted by the license server, the license is maintained on the gateway. The granted licenses then can be assigned on a per call basis to a analog call that have media recording feature.
The media recording session is initiated when a pre-configured set of rules is approved on the telephony leg. These rules include recording license availability and the recording feature configuration. It is provisioned under the POTS dial-peer which reflects the telephony leg of a call. There are three different basic TDM gateway usecases that can be considered for media recording:. As there is no VoIP component present for this call, you should use the no local-bypass CLI configuration under voice-card so that a VoIP leg is introduced to help facilitate media recording for the call.
Time-division Multiplexing TDM media recording is not supported for the following calls:. Categories: Cisco. Your email address will not be published. Post comment. This site uses Akismet to reduce spam. Learn how your comment data is processed. Then enable debugging. Configuring the interface on R1 R1 conf terminal Enter configuration commands, one per line.
Now do the same on R2. Start by enabling debugging. Configuring the interface on R2. R2 conf terminal Enter configuration commands, one per line. R2 ping
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