Voice-over-IP Card

This chapter describes the Voice-over-IP (VoIP) card, a coprocessing card and software package that adds VoIP capabilities to Cisco AS5300 universal access servers. This chapter includes the following sections:

Overview

The VoIP capability enables a Cisco router to carry live voice traffic (for example, telephone calls and faxes) over an IP network. The VoIP card is available as a spare or a factory-installed card within the chassis.

The VoIP card contains multiple digital signal processor (DSP) modules. It uses the Cisco AS5300's Quad or Octal T1/E1 Public Switched Telephone Network (PSTN) interface and local-area network (LAN) or wide-area network (WAN) routing capabilities to provide VoIP packetized voice traffic to or from T1/E1 time-division multiplexing (TDM) traffic. Model AS53-6VOX supports 48/60 channels, and model AS53-VOXD supports 96/120 channels. Major applications of the VoIP cards include toll bypass, remote PBX presence over WANs, unified voice/data trunking, and plain old telephone service (POTS) Internet phone gateway. If you purchased a chassis with this card already installed, go directly to "Prerequisites ."

Note In certain countries, use of these products or provision of voice telephony over the Internet may be prohibited and/or subject to laws, regulations or licenses, including requirements applicable to the use of the products under telecommunications and other laws and regulations; customer must comply with all such applicable laws in the country(ies) where customer intends to use the product.

Benefits

VoIP offers the following benefits:

Toll bypass
Remote PBX presence over WANs
Unified voice/data trunking
POTS-Internet telephony gateways

The VoIP card has two primary applications. The first application (see Figure 5-1) provides a central-site telephony termination facility for VoIP traffic from multiple voice-equipped Cisco AS5300 remote office facilities.

Figure 5-1: VoIP Card as Central Site

The second application (see Figure 5-2) uses the VoIP card as a PSTN gateway for Internet telephone traffic. This leverages the standardized use of H.323-based Internet telephone client applications.

Figure 5-2: VoIP Card as Internet Telephone to PSTN Gateway

Hardware Features

The basic hardware features of the VoIP card and the DSP modules are described in the following sections.

Note You need 16 MB of system Flash memory to store two Cisco IOS images on your Cisco AS5300 access server.

VoIP Card

The VoIP card resides in one of the slots in the Cisco AS5300 universal access server. Up to five DSP modules can be installed onto the Voice card to perform voice processing for up to 30 B channels.

CPU: MIPS 4700 100 MHz
Support chipset: AS53-6VOX (DSPM 542) uses GT-64010 system controller; AS53-VOXD (DSPM 549) uses GT-64010 system controller
DRAM: Standard 72 pin SIMM (4, 8, 16 MB)
Flash: Cisco proprietary Flash 80 pin SIMM
Five DSP module sockets

DSP Modules

The DSP module provides voice compression and packetization services to the Voice card so that you can both configure and exapand it.

6 DSPs per DSP module, use 4 DSP modules for T1 applications and 5 DSP modules for E1 applications
Uses TI TMS320C542 50 MHz or TI TMS320C549 100 MHz
DSP SRAM: 128 Kwords (16 bit)

Caution Do not mix DSP modules on the same voice card. You cannot install a DSP 549 double-density module and a DSP 542 module on the same voice card, nor can you mix a voice card carrying only DSP 549 modules and a voice card carrying only DSP 542 modules in the same chassis.

Prerequisites

Before you can configure your Cisco AS5300 to use VoIP, you must first:

Establish a working IP network. For more information about configuring IP, refer to the "IP Overview," "Configuring IP Addressing," and "Configuring IP Services" chapters in the Network Protocols Configuration Guide, Part 1.
Complete basic configuration for the Cisco AS5300. This includes, as a minimum, the following tasks:
- Configure a host name and password for the Cisco AS5300.
- Configure Ethernet 10BaseT/100BaseT interface of your Cisco AS5300 so that it is recognized as a device on the Ethernet LAN.
- Configure Cisco AS5300 interfaces for ISDN PRI lines.
- Configure ISDN D channels for each ISDN PRI line.

: For more information about these configuration tasks, refer to the Cisco AS5300 Universal Access Server Software Configuration Guide.

Install the VoIP card (VFC) into the appropriate slot of your Cisco AS5300 access server. Each VFC can hold up to five digital signal processor modules, enabling processing for up to 30 B channels.
Complete your company's dial plan.
Establish a working telephony network based on your company's dial plan.
Integrate your dial plan and telephony network into your existing IP network topology. Merging your IP and telephony networks depends on your particular IP and telephony network topology. In general, we recommend the following:
- Use canonical numbers wherever possible. It is important to avoid situations where numbering systems are significantly different on different routers or access servers in your network.
- Make routing and/or dialing transparent to the user—for example, avoid secondary dial tones from secondary switches, where possible.
- Contact your PBX vendor for instructions on how to reconfigure the appropriate PBX interfaces.

Cisco IOS Software Requirements

The VoIP card and the DSP modules require Cisco IOS Release 11.3(2)N or higher (plus images only).

Removing and Installing Cards

Caution If you skipped in "Safety Warnings, Recommendations, and Tools Required," (in the beginning of this guide), go back to that chapter and read it now. This chapter provides important safety information and a list of tools you need to successfully remove and install cards without damaging your access server.

R emoving VoIP Cards

To remove the VoIP card, perform the following steps:

Step 1 Attach an ESD-preventive wrist strap.

Warning Do not work on the system or connect or disconnect cables during periods of lightning activity.

Caution The cards are not hot-swappable (that is, you cannot remove or install them when the power to the access server is ON). Be sure to turn OFF the power to the access server before installing or removing cards. Failure to do so can damage the access server.

Step 2 Power OFF the access server. Turn the power switch on the access server OFF and disconnect site power. If using a DC-powered unit, refer to Figure 5-3 and complete steps a to d.

Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit. To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position.

Figure 5-3: DC Power Supply Connections

(a) Loosen the three locking screws for the negative, positive, and ground connectors on the DC power supply terminal block.

(b) Remove the -48 VDC wire from the terminal block negative connector (-) .

(d) Remove the safety ground (green wire) from the terminal block ground connector.

Step 3 On the rear panel of the access server, locate the VoIP card seen in Figure 5-4.

Step 4 Loosen the two captive screws that secure the VoIP card to the chassis until each screw is free of the chassis (see Figure 5-4).

Figure 5-4: VoIP Card Removal

Step 5 Insert the card removal tool so that the slots in each arm of the tool are behind the shoulder of each captive screw, as shown in Figure 5-5, and carefully pull the removal tool toward you until the VoIP card slides free of the chassis.

Caution The EMI protective devices on the VoIP card are designed to make the card fit tightly. When removing the card, they can release suddenly. Exercise caution when removing the VoIP card with the card removal tool.

Figure 5-5: Removing VoIP Card

Step 6 Set the removed VoIP card aside on an ESD-preventive mat.

Step 7 Continue with one of the following sections:

"Removing DSP Modules" to remove DSP modules from the VoIP card.
"Installing VoIP Cards" to install a new VoIP card.

Removing DSP Modules

To remove DSP modules:

Step 1 Make sure that you have attached an ESD-preventive wrist strap and that the system is powered OFF.

Step 2 On the VoIP card, locate the DSP module you will replace (see Figure 5-6).

Figure 5-6: Removing DSP Modules

Step 3 Orient the VoIP card so that the DSP module socket is facing toward you.

Step 4 Gently pry the front edge of the DSP module away from the standoffs and the socket, as indicated by the arrow labeled 1 in Figure 5-6.

Step 5 When the DSP module is free of the socket, gently pry the back edge of the DSP module away from the other set of standoffs, as indicated by the arrow labeled 2 in Figure 5-6.

Step 6 Continue with the following section, "Removing DSP Modules."

Installing DSP Modules

To install a DSP module, first seat the DSP module in the socket, then press all four corners onto their respective standoffs, as shown in Figure 5-7.

Figure 5-7: Installing DSP Modules

Note Mate the socket on the DSP module with the socket on the VoIP card.

Step 7 Continue with the following section, "Installing VoIP Cards" to install the VoIP card.

In stalling VoIP Cards

To install a VoIP card:

Step 1 Remove the VoIP card from the ESD-preventive mat.

Step 2 Slide the VoIP card into the slot until it touches the backplane connector.

Step 3 Align the captive screws with their holes, and then seat the VoIP card completely.

Step 4 Tighten the two captive screws (see Figure 5-8) to secure the VoIP card to the chassis.

Figure 5-8: Installing the VoIP Card

Step 5 If the access server is configured with fewer than three cards, make sure that a blank slot cover is installed over each open slot to ensure proper airflow inside the chassis.

Step 6 Reconnect the AC power cord. Or, if using DC power, refer to Figure 5-9, and then complete steps a to d.

Warning The illustration shows the DC power supply terminal block. Wire the DC power supply using the appropriate wire terminations at the wiring end, as illustrated. The proper wiring sequence is ground to ground, positive to positive, and negative to negative. Note that the ground wire should always be connected first and disconnected last.

Figure 5-9: DC Power Supply Connections

Caution Do not overtorque the terminal block contact screws. The recommended torque is 8.2 ± 0.4 inch-lb.

(a) Insert the safety ground (green wire) into the terminal block ground connector and tighten the locking screw. Ensure that no bare wire is exposed.

(b) Insert the +48 VDC wire into the terminal block positive connector (+) and tighten the locking screw. Ensure that no bare wire is exposed.

(c) Insert the -48 VDC wire into the terminal block negative connector (-) and tighten the locking screw. Ensure that no bare wire is exposed.

(d) Make sure the power supply cord is secured to the cable strain-relief clamps on the DC power supply with cable ties.

Warning After wiring the DC power supply, remove the tape from the circuit breaker switch handle and reinstate power by moving the handle of the circuit breaker to the ON position.

Step 7 Power ON the access server.

The internal power supply fan should power on.

Step 8 Continue with the following section, "Upgrading VoIP Card VCWare ."

Upgrading VoIP Card VCWare

To download VCWare to your Voice card, you need to:

1. Identify Voice cards in the system and determine whether the VFC is in VCWare mode or ROM Monitor mode. This determines how you download software to the VFC.

2. Check to see that the version of VFC ROM Monitor software is compatible with your installed Cisco IOS image. VFC ROM Monitor version 1.2 requires Cisco IOS image 0.14.1 (1.6 NA1) or later.

3. Download the software using the appropriate procedure.

Identify Voice Cards

Use the following steps to identify the Voice cards in the system and determine whether the VFC is in VCWare mode or ROM Monitor mode. This determines how you download software to the VFC.

Table 5-1: Identifying Voice Cards

Step Command Purpose

Step	Command	Purpose
1	`5300> enable Password: <password> 5300#`	Enter enable mode. Enter the password. You have entered enable mode when the prompt changes to `5300#`.
2	`5300# show vfc <0-2> board`	Determines the number of Voice cards in the system, the slot number for each card, and the VFC mode (VCWare or ROM Monitor) in which they are running. The VFC mode is indicated as follows: VCWARE running for VCWare mode or ROMMON for ROM Monitor mode Note the location and the mode type for each voice card. You will need this information when you upgrade the VCWare.
3	`--`	Go to one of the following procedures: "Replace Firmware with VCWare in VCWare Mode," if your voice card is running in VCWare mode or "Replace Firmware with VCWare in ROM Monitor Mode," if your voice card is running in ROM Monitor mod

5300> enable
Password: <password>
5300#

Enter enable mode.

Enter the password.

You have entered enable mode when the prompt changes to 5300#.

5300# show vfc <0-2> board

Determines the number of Voice cards in the system, the slot number for each card, and the VFC mode (VCWare or ROM Monitor) in which they are running.

The VFC mode is indicated as follows:

VCWARE running for VCWare mode

or
ROMMON for ROM Monitor mode

Note the location and the mode type for each voice card. You will need this information when you upgrade the VCWare.

--

Go to one of the following procedures:

"Replace Firmware with VCWare in VCWare Mode," if your voice card is running in VCWare mode
or
"Replace Firmware with VCWare in ROM Monitor Mode," if your voice card is running in ROM Monitor mod

Replace Firmware with VCWare in VCWare Mode

Configure

Use the steps that follow to download new voice software if your voice card is running in VCWare mode. When downloading from a diskette, first copy the software from the diskette to a TFTP server. After the software is on the TFTP server, begin the following steps.

Caution Erasing the VFC files can result in system outage or the corruption of your VFC board. Check to ensure that the correct version of software resides on your TFTP server before continuing.
Table 5-2: Replace Firmware in VCWare Mode

Step	Command	Purpose
1 (optional)	`5300# erase vfc slot_number This will erase the contents of VFC Flash. Continue ?[y/n]:yes This will take some time. Please, wait...vfc`	Note See the Caution before this table before continuing. Erase the contents of the VFC Flash memory in the selected voice card. If this command fails, use the screen "Replace Firmware with VCWare in ROM Monitor Mode."
2 (optional)	`5300# show vfc slot_number directory`	Verify the VFC Flash memory is empty.
3	`5300# copy tftp: vfc: or 5300# copy tftp vfc Voice card slot number <slot ? 1> Address or name of remote host [UNKNOWN]? 223.255.212.244 Source file name? /path/vcw-vfc-mz.1.0.bin Destination file name [vcw-vfc-mz.1.0.bin]? vcw-vfc-mz.1.0.bin ! note, the destination filename is IMPORTANT Accessing file 'vcw-vfc-mz.1.0.bin' on 223.255.212.244... Loading vcw-vfc-mz.1.0.bin from 223.255.212.244 (via Ethernet0): !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![OK - 291292/291328 bytes]`	Use the first copy command with Cisco IOS Release Version 12.x and use the second copy command (no colons) with Cisco IOS Release Version 11.x. Use TFTP to download the new VCWare to VFC Flash memory. In this example, slot 1 is chosen by default. Note The destination image name must begin with "vcw-" (all lowercase) and no other character can be in front of vcw-, so no directory path should be included at the beginning of the image name. Be absolutely certain to get the name right. If one character or space is wrong, the file will not be recognized and will not be copied over.
4	`5300> clear vfc slot_number Do you really want to reset this card ? [y/n] y Please, wait...`	Reboot the VFC so you can add the new VCWare image into the voice card. Press y to verify the reset function.
5	`5300> enable Password: <password> 5300#`	Reenter enable mode. Enter the password. You have entered enable mode when the prompt changes to `5300#`.
6	`5300# show vfc slot_number board 5300#`	Check to see that the VFC is back up in VCWare mode. If the VFC is not in VCWare mode, repeat Step 4 again. If this continues to fail, use the procedure in the section "Replace Firmware with VCWare in ROM Monitor Mode."
7	`5300# show vfc slot_number directory 5300#`	Verify that VCWare is in the VFC Flash memory.
8	`5300# unbundle vfc slot_number Do you want to continue ? [y/n]: y`	Unbundle the DSPWare from the VCWare and configure the default file and capability lists with default values. Continue by pressing y when the prompt appears.
9	`5300# show vfc slot_number directory 5300#`	Verify that the DSPWare is unbundled.
10	`5300# show vfc slot_number default-file 5300#`	Verify that the default file list is initialized.
11	`5300# show vfc slot_number cap-list 5300#`	Verify that the capability list is populated.
12	`5300# reload`	Reboot the Cisco AS5300 so these changes take effect.

Verify

To check that you have successfully downloaded the software:

Enter the show vfc slot_number directory command to verify that the VCWare is in the Flash memory. Only one filename should appear. If this command times out, start over with "Identify Voice Cards."


5300# show vfc 1 dir

 
Files in slot 1 VFC flash:
	File Name 	Size (Bytes)
1.	vcw-vfc-mz.1.0.bin 	291292

Enter the show vfc slot_number default-file and show vfc slot_number cap-list commands to verify that the DSPWare is unbundled and the default file list and cap-list are initialized.

5300# show vfc 1 def (full word is default-file) 
 
Default File List for VFC in slot 1: 
 
1. btl-vfc-l.1.0.bin
2. cor-vfc-l.1.0.bin
3. bas-vfc-l.1.0.bin
4. cdc-g729-l.1.0.bin
5. fax-vfc-l.1.0.bin
6. jbc-vfc-l.1.0.bin
 
5300# show vfc 1 cap-list

 
Capability List for VFC in slot 1: 
 
1. fax-vfc-l.0.13.0.bin
2. bas-vfc-l.0.13.0.bin
3. cdc-g729-l.0.13.0.bin
4. cdc-g711-l.0.13.0.bin
 
5300#

Tips

If you are having trouble downloading the voice card software in VCWare mode, try the following:

Enter the show vfc slot_number board command to verify that the voice card is back up in VCWare mode.

5300# show vfc 1 board

VFC board state is UP, vfc status VCWARE running(0x4)
VFC board in slot 1 with 18 dsps
5300#

Determine if the VFC ROM version you are running is 1.1 or version 1.2.

5300# sh vfc 1 ver vcw

 
Voice Feature Card in Slot 1:
     VCware Version     :  1.0
     ROM Monitor Version:  1.2
     DSPware Version    :  1.0

Type the reload command to reboot the Cisco AS5300 so these changes take effect.

Replace Firmware with VCWare in ROM Monitor Mode

Configure

Use the steps that follow to download new voice software if your voice card is running in ROM Monitor mode. When downloading from a diskette, first copy the software from the diskette to a TFTP server. After the software is on the TFTP server, begin the following steps.

Caution Erasing the VFC files can result in system outage or the corruption of your VFC board. Check to ensure that the correct version of software resides on your TFTP server before continuing.

Table 5-3: Replace Firmware in ROM Monitor Mode

Step	Command	Purpose
1 (optional)	`5300# clear vfc slot_number purge debug vfc <slot#> start debug vfc <slot#> cons flash erase This will erase the contents of VFC Flash. Continue ?[y/n]: y This will take some time. Please, wait...vfc`	Note See the Caution before this table before continuing. Erase the contents of the VFC Flash memory in the selected voice card. This may take awhile. Press y to continue.
2	`5300# copy tftp vfc Voice card slot number <slot ? 1> Address or name of remote host [UNKNOWN]? 223.255.212.244 Source file name? vcw-vfc-mz.1.0.bin Destination file name [vcw-vfc-mz.1.0.bin]? vcw-vfc-mz.1.0.bin ! note, the destination filename is IMPORTANT Accessing file 'vcw-vfc-mz.1.0.bin' on 223.255.212.244... Loading vcw-vfc-mz.1.0.bin from 223.255.212.244 (via Ethernet0): !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![OK - 291292/291328 bytes]`	Use TFTP to download the new VCWare to VFC Flash memory. Note The image name must begin with "vcw-" (all lowercase) and no other character can be in front of the "vcw-," so no directory path should be included at the beginning of the image name. Be absolutely certain to get the name right. If one character or space is wrong, the file will not be recognized and will not be copied over.
3	`5300> clear vfc slot_number Do you really want to reset this card ? [y/n] y Please, wait...`	Reset the voice card so you can add the new VCWare image into the voice card. Press y to verify the reset function.
4	`5300> enable Password: <password> 5300#`	Reenter enable mode. Enter the password. You have entered enable mode when the prompt changes to `5300#`.
5	`5300# show vfc slot_number board 5300#`	Check to see if the VFC is back up in ROM Monitor mode.
6	`5300# show vfc slot_number directory 5300#`	Verify that VCWare is in the VFC Flash memory.
7	`5300# unbundle vfc slot_number Do you want to continue ? [y/n]: y`	Unbundle the DSPWare from the VCWare and configure the default file list and the capability list. Continue by pressing y when the prompt appears.
8	`5300# show vfc slot_number directory 5300#`	Verify that the DSPWare is unbundled.
9	`5300# show vfc slot_number default-file 5300#`	Verify that the default file list is initiated.
10	`5300# show vfc slot_number cap-list 5300#`	Verify that the capability list is initiated.
11	`5300# reload`	Reboot the Cisco AS5300 so these changes take effect.

Verify

To check that you have successfully downloaded the software:

Enter the show vfc slot_number directory command to verify that the VCWare is in the Flash memory. Only one filename should appear. If this command times out, restart with "Identify Voice Cards."


5300# show vfc 1 dir

 
Files in slot 1 VFC flash:
	File Name 	Size (Bytes)
1.	vcw-vfc-mz.1.0.bin 	291292

Enter the show vfc slot_number default-file and show vfc slot_number cap-list commands to verify that the DSPWare is unbundled and the default file list and cap-list are initialized.


5300# show vfc 1 def (full word is default-file) 
 
Default File List for VFC in slot 1: 
 
1. btl-vfc-l.1.0.bin
2. cor-vfc-l.1.0.bin
3. bas-vfc-l.1.0.bin
4. cdc-g729-l.1.0.bin
5. fax-vfc-l.1.0.bin
6. jbc-vfc-l.1.0.bin
 
5300# show vfc 1 cap-list

 
Capability List for VFC in slot 1: 
 
1. fax-vfc-l.0.13.0.bin
2. bas-vfc-l.0.13.0.bin
3. cdc-g729-l.0.13.0.bin
4. cdc-g711-l.0.13.0.bin
 
5300#

Tips

If you are having trouble downloading the voice card software in ROM Monitor mode, try the following:

Enter the show vfc slot_number board command to verify that the voice card is back up in VCWare mode.


5300# show vfc 1 board

VFC board state is UP, vfc status VCWARE running(0x4)
VFC board in slot 1 with 18 dsps
5300#

Determine if the VFC ROM version you are running is 1.1 or 1.2.

5300# sh vfc 1 ver vcw

 
Voice Feature Card in Slot 1:
     VCware Version     :  1.0
     ROM Monitor Version:  1.2
     DSPware Version    :  1.0

Configuring VoIP

The actual configuration procedure depends entirely upon the topology of your voice network, but, in general, you need to complete the following configuration tasks:

1. Configure IP Networks for Real-Time Voice Traffic.

2. Configuring Voice Ports for ISDN PRI.

3. Configuring the D Channels.

4. Configuring the Dial Peers.

5. Configuring Voice Network Data.

For detailed procedures, see the Cisco AS5300 Universal Access Server Software Configuration Guide. You can find the most up-to-date version of this manual online from either CCO or the CD-ROM.

For access to the CCO version of this manual, go to:

: Products & Ordering: Documentation: Cisco Documentation: Cisco Product Documentation: Access Servers and Access Routers: Access Servers: Cisco AS5300: Cisco AS5300 Universal Access Server Software Configuration Guide.

For access to the CD-ROM version of this manual, go to:

: Cisco Product Documentation: Access Servers and Access Routers: Access Servers: Cisco AS5300: Cisco AS5300 Universal Access Server Software Configuration Guide.

For detailed examples of command output, see the Voice Over IP for the Cisco AS5300 Configuration Guide. You can find the most up-to-date version of this manual online from either CCO or the CD-ROM.

For access to the CCO version of this manual, go to:

: Products & Ordering: Documentation: Cisco Documentation: Cisco Product Documentation: Access Servers and Access Routers: Cisco Voice Over IP Documentation: Voice Over IP for the Cisco AS5300: Voice Over IP for the Cisco AS5300 Configuration Examples.

For access to the CD-ROM version of this manual, go to:

: Cisco Product Documentation: Access Servers and Access Routers: Access Servers: Cisco Voice Over IP Documentation: Voice Over IP for the Cisco AS5300: Voice Over IP for the Cisco AS5300 Configuration Examples.

Table of Contents

Voice-over-IP Card