SVDFAQ10.TXT 11 OCT 96 Revision 1.0 THIS DOCUMENT MAY BE DISTRIBUTED FREELY PROVIDED THAT IT IS REPRODUCED IN ITS ENTIRETY. CONTENTS 1 Introduction 2 Identifying the features your modem supports 2.1 Using the ATi10 command 2.2 Feature definitions 2.2.1 Handset Support (170) 2.2.2 Headset Support (171) 2.2.3 Full Duplex Speakerphone (176) 2.2.4 V.80 Synchronous Access Mode 3 SVD Example Sessions 3.1 Voice-first connections from terminal mode 3.1.1 Handset 3.1.2 Headset 3.1.3 Speakerphone 3.1.4 Various combinations of handset, headset, speakerphone 3.2 SVD connections without establishing a voice call first 3.2.1 From terminal mode 3.2.2 Games 4 Notes on video conferencing 5 Technical Support 1 INTRODUCTION The term "SVDFAQ" stands for "Simultaneous Voice and Data Frequently Asked Questions." This document is designed to accompany Diamond 33,600bps modems. Not all all Diamond 33.6 modems support the SVD feature and Section 2 tells you how to query your modem for a list of supported features. There are two main types of SVD designs: Analog (ASVD) and Digital (DSVD). As of this writing, Diamond only supports ASVD (referred to as "SVD" in this document). Simultaneous voice and data gives you the ability to carry on a voice conversation while transmitting data at the same time over a single telephone line. It does require that both modems support the SVD feature. 2 IDENTIFYING THE FEATURES YOUR MODEM SUPPORTS 2.1 USING THE ATi10 COMMAND To see a complete list of the special features that your modem supports, you need to open a data terminal software program (such as HyperTerminal, COMit, TRIO, or Procomm Plus) and issue the command: ATi10 and press ENTER The modem will return the exact model name of your modem and a list of supported features. While there are many features available, the only one which matters for SVD connectivity is 178 ASVD If your modem supports option 178, then it supports the SVD feature. Your modem may or may not also support 170 Handset Support 171 Headset Support 176 Full Duplex Speakerphone These options 170, 171, and 176 are not included in every Diamond modem. The example sessions contained in Section 3 cover a variety of modem configurations so don't be concerned if your modem does not support all of these features. 2.2 FEATURE DEFINITIONS 2.2.1 HANDSET SUPPORT (170) Handset support is also referred to as "powered handset" which means that the modem provides the power necessary to use a telephone handset connected through the modem. In other words, if the modem is in voice mode, you will be able to use an attached handset to talk through the modem to the remote person. 2.2.2 HEADSET SUPPORT (171) Headset support allows you to use a combination headset/ microphone with your modem. 2.2.3 FULL DUPLEX SPEAKERPHONE (176) Full duplex speakerphone allows you to talk and hear at the same time (like a regular analog telephone). Half duplex only allows you to talk OR listen, but you cannot do both at the same time (like a CB radio or a walkie talkie). 2.2.4 V.80 SYNCHRONOUS ACCESS MODE (186) V.80 allows your modem to support video conferencing software. 3 SVD EXAMPLE SESSIONS 3.1 VOICE-FIRST CONNECTIONS FROM TERMINAL MODE In a voice-first scenario, you establish a voice connection and then switch to SVD-mode during the call. There are many different ways to accomplish this depending upon whether your modem supports Speakerphone (SP), Headset, and/or Handset options. All of these examples assume that you have two Diamond ASVD modems (one on each end of the call). NOTE: It's important to understand that the voice portion of SVD only works when you "talk through" the modem. In other words, you can only talk to the remote person through a handset, headset, or microphone that is attached to your computer. More specifically, the handset, headset, or microphone must be connected to your modem either directly or via cable from the soundcard. Some Diamond modems have microphone and speaker jacks while others have a "header" for connecting a cable from a soundcard. If your modem has neither a microphone jack nor a cable header, it does not support SVD. ANOTHER NOTE: Most games don't have a terminal mode where you can issue commands to the modem. In this case, you wouldn't establish a "voice-first" connection, you would want an "SVD FIRST" connection. Instructions for this are in section 3.2. 3.1.1 HANDSET If your modem has two telephone jacks and it supports special feature 170 (powered handset), you can connect the telephone line to the "line" jack and a telephone handset to the "phone" jack. If your modem has only one telephone jack and it supports special feature 170 (powered handset), you need a special "Y" adapter for your telephone line that separates the inner and outer pairs of telephone wires. (The power for the handset is carried along the outer pair of wires to the telephone). Step 1: Party 1 calls Party 2 via telephone handset. Step 2: Both parties open data terminal software (such as HyperTerminal, Procomm Plus, COMit, etc). Step 3: Both sides type AT&F2-SMS=2 and press ENTER. Step 4: Party 1: Type ATD and press ENTER. Step 5: Party 2: when the RING message appears on the screen type ATA followed by the ENTER key. NOTE: The voice channel will temporarily go silent while the modems negotiate the SVD connection. The modems will negotiate a connection. Once the CONNECT XXXX message appears on the screen, the voice conversation can resume and data may be transferred between the two modems via the terminal software. Step 6: When you are ready to disconnect the call, either side can type +++ wait for OK to appear on the screen and then type ATH and press ENTER. This will drop the CARRIER entirely (there is no way to drop back from SVD mode into voice-only mode without redialing and establishing a new connection). 3.1.2 HEADSET If you want to use a headset and your modem has headset support (optional feature 171), you will need a special headset that separates the headset cable into separate microphone and speaker plugs. One plug goes into the MIC jack on the modem and the other goes into the SPKR jack on the modem. NOTE: Connecting a headset to the MIC and SPKR jacks is the same as connecting a microphone and speakers to the modem and using them in speakerphone mode. However, enabling headset mode in the modem changes the echo cancellation characteristics and may provide better sound quality. Some modems also have an audio header so the modem can be connected directly to the soundcard via cable. In this situation, your headset could be connected to your soundcard instead of directly to the modem. Step 1: Both parties open data terminal software (such as HyperTerminal, Procomm Plus, COMit, etc). Step 2: Both sides type AT&F2#CLS=8#VLS=5 and press ENTER. This puts both modems in headset voice mode. Step 3: Party 1: call Party 2 through the terminal software by typing ATDT followed by the telephone number and then press ENTER. Step 4: Party 2: when the RING message appears on the screen, type ATA and press RETURN to answer the call. The modem will go off-hook and both parties can converse via headset. Step 5: When both parties are ready to switch to SVD modem, both sides type AT-SMS=2 and press ENTER. Step 6: Party 1: Type ATD and press ENTER. Step 7: Party 2: when the RING message appears on the screen type ATA followed by the ENTER key. NOTE: The voice channel will temporarily go silent while the modems negotiate the SVD connection. The modems will negotiate a connection. Once the CONNECT XXXX message appears on the screen, the voice conversation can resume and data may be transferred between the two modems via the terminal software. Step 8: When you are ready to disconnect the call, either side can type +++ wait for OK to appear on the screen and then type ATH and press ENTER. This will drop the CARRIER entirely (there is no way to drop back from SVD mode into voice-only mode without redialing and establishing a new connection). 3.1.3 SPEAKERPHONE You can use a microphone and speakers in "speakerphone" mode if your modem supports optional feature 176 (Full duplex speakerphone). This allows hands-free operation while conversing through the modem. There are several possibilities for microphone and speaker connections. If your modem has external MIC and SPKR jacks, you can connect the microphone and speakers directly to the modem. If you have a soundcard, you could also connect an audio cable from the modem SPKR jack to the soundcard's MIC jack and connect your speakers to the soundcard's SPKR jack. If your modem has an audio header for connecting the modem directly to the soundcard via an internal cable, you can connect the microphone and speakers to either the modem or the soundcard. NOTE: If you aren't sure where to hook up your microphone and speakers, experiment. The microphone and speaker voltages are low enough that you won't blow up your modem or your soundcard if you don't get it right the first time. Sometimes the jacks on soundcards aren't labelled, so experimentation is the only way to find a working solution. Step 1: Both parties open data terminal software (such as HyperTerminal, Procomm Plus, COMit, etc). Step 2: Both sides type AT&F2#CLS=8#VLS=6 and press ENTER. This puts both modems in speakerphone voice mode. Step 3: Party 1: call Party 2 through the terminal software by typing ATDT followed by the telephone number and then press ENTER. Step 4: Party 2: when the RING message appears on the screen, type ATA and press RETURN to answer the call. The modem will go off-hook and both parties can converse via headset. Step 5: When both parties are ready to switch to SVD modem, both sides type AT-SMS=2 and press ENTER. Step 6: Party 1: Type ATD and press ENTER. Step 7: Party 2: when the RING message appears on the screen type ATA followed by the ENTER key. NOTE: The voice channel will temporarily go silent while the modems negotiate the SVD connection. The modems will negotiate a connection. Once the CONNECT XXXX message appears on the screen, the voice conversation can resume and data may be transferred between the two modems via the terminal software. Step 8: When you are ready to disconnect the call, either side can type +++ wait for OK to appear on the screen and then type ATH and press ENTER. This will drop the CARRIER entirely (there is no way to drop back from SVD mode into voice-only mode without redialing and establishing a new connection). 3.1.4 VARIOUS COMBINATIONS OF HANDSET, HEADSET, SPEAKERPHONE All of the preceeding examples in 3.1.1, 3.1.2, and 3.1.3 assume identical configurations on both ends of the call (handset:handset, headset:headset, SP:SP). However, you can mix and match the voice options. For example, Party 1 could use speakerphone mode while Party 2 uses headset mode. The examples in 3.1.1, 3.1.2, and 3.1.3 can be modified to meet your specific setup. The #VLS=n command controls the voice mode in the modem: #VLS=0 Handset mode (default) #VLS=5 Headset mode #VLS=6 Speakerphone mode NOTE: The modem must be placed in voice mode with AT#CLS=8 prior to issuing the AT#VLS=n command. For example AT#CLS=8#VLS=6 places the modem in voice mode with the speakerphone option enabled. You can change the #VLS=n commands in examples 3.1.1, 3.1.2, and 3.1.3 to match your specific setup. 3.2 SVD CONNECTIONS WITHOUT ESTABLISHING A VOICE CALL FIRST NOTE: This section assumes that your handset, headset, and/or microphone are already connected to your computer. For more information on connection options, see section 3.1 above. 3.2.1 CONNECTING FROM TERMINAL MODE Step 1: Both parties open data terminal software (such as HyperTerminal, Procomm Plus, COMit, etc). Step 2: Both sides type AT&F2-SMS=2#VLS=5 and press ENTER. This puts both modems in headset voice mode. If you are using speakerphone, substitute #VLS=6 instead of #VLS=5. If you are using handset, substitute #VLS=0 instead of #VLS=5. Step 3: Party 1: call Party 2 through the terminal software by typing ATDT followed by the telephone number and then press ENTER. Step 4: Party 2: when the RING message appears on the screen, type ATA and press ENTER. The modems will negotiate a connection. Once the CONNECT XXXX message appears on the screen, the voice conversation can begin and data may be transferred between the two modems via the terminal software. Step 7: When you are ready to disconnect the call, either side can type +++ wait for OK to appear on the screen and then type ATH and press ENTER. This will drop the CARRIER entirely (there is no way to drop back from SVD mode into voice-only mode without redialing and establishing a new connection). 3.2.2 GAMES Dial-up games such as WarCraft support ASVD connections by simply modifying the modem initializion string in the game. Add the following line to the end of the existing modem initialization string: -SMS=2#VLS=0 for handset mode -SMS=2#VLS=5 for headset mode -SMS=2#VLS=6 for speakerphone mode After adjusting the initialization string, follow the normal game instructions for dialing and connecting. 4 NOTES ON VIDEO CONFERENCING Video conferencing requires a Diamond modem that supports the V.80 protocol (optional feature 186). Most Diamond 33600bps modems support V.80. To find out for sure if your modem supports V.80, issue the command ATi10 through your data terminal software. If one of the result codes is 186, then your modem supports the V.80 protocol. You do NOT need an ASVD modem in order to do video conferencing. The simultaneous voice and data features in video conferencing are handled by the video conferencing software, not the modem. V.80 is the protocol that instructs the modem how to convert the video conferencing data from synchronous to asynchronous mode for transmission across an analog telephone line. There are several protocols involved in this process, but this example is simplified for brevity. As more information becomes available on video conferencing software settings, options, and features, we will post it on our online sites (World Wide Web, CompuServe, and BBS). 5 TECHNICAL SUPPORT Updates to this and other technical support documents are regularly posted on Diamond's online services. A complete listing of contact information is included below. World Wide Web site USA http://www.diamondmm.com Germany http://www.spea.com FTP site USA ftp.supra.com ftp.diamondmm.com E-mail USA intltech@supra.com (English) Germany GO SPEA on CompuServe U.K. 100632.1252@compuserve.com CompuServe Forum USA GO SUPRA Germany GO SPEA Supra Technical Support BBS USA +1 541 967 2444 (modem) Germany +49 81 51 266 333 (modem) +49 81 51 266 334 (ISDN) U.K. +44 11 89 44 44 15 (modem) Fax USA +1 541 967 2401 Fax Back (call with touch tone phone) USA +1 541 967 0072 (English) Germany +49 81 51 26 63 32 (German and English) Voice USA +1 541 967 2450 Germany +49 81 51 26 63 30 (German) U.K. +44 11 89 44 44 44 (English) +44 11 89 44 44 33 (French) SVDFAQ.TXT 11 OCT 96 Revision 1.0 MATT ALFORD DIAMOND MULTIMEDIA SYSTEMS, INC.