This document answers some of the most frequently asked questions (FAQ) about Cisco IP Phones. Cisco Call. Manager Express Vo. IP Call Processing Features > IP Phones and IP Phone Lines. This chapter covers the following topics: IP phones and lines. Shared lines. Hunt groups. Intercoms. Paging. Line overlays. Call pickup. Softkey customization. Call transfer and forward. This chapter describes the primary call processing features of Cisco. Call. Manager Express (CME) and shows how you can combine them to produce an. It includes a basic discussion of the. IP telephony for the small office and relates these to the more. TDM) or analog- based telephone systems. Firstly, thanks to the generosity of Warcom and Obihai (Mark W) as per this thread(now deleted), I've started this thread for all the successful recipients of t.
PBX) and Key System. This chapter explains the terminology and Cisco IOS commands (command- line. CLI]) used to configure IP phones, extension lines, shared lines. One of the key perspectives to understanding Cisco CME is that. Cisco IOS router. This means that the same modular. Cisco IOS command- line organization. Cisco CME structure. The result is that individual. It. also means that it is often possible to combine features to produce some fairly. Some of these combinations are not obvious from a quick. CLI. This chapter is intended to help you understand and use some. The sample configurations in this chapter are presented using the Cisco IOS. CLI. Many of the configurations described can also be generated using the web. GUI). In both cases, the configurations. CLI. format. The CLI presentation is more compact and easier to grasp than an. GUI screen shots. The CLI presentation also shows the. Cisco CME- specific functions with the CLI commands for. Cisco IOS router functions, because the generic Cisco IOS. GUI equivalent. The CLI format is also. Cisco IOS. CLI. The GUI is more extensively covered in Chapter 1. Cisco IPC Express. General Administration and Initial System Setup," and Chapter 1. Configuring and Managing Cisco IPC Express Systems."The objective of this chapter is to give you a broad understanding of the. Cisco CME provides. It's not meant to be an exhaustive manual. Cisco CME system to meet every possible combination of. System configuration is. Chapter 1. 4. For the more sophisticated configurations, consult the. Cisco IOS feature and Cisco CME administration documentation available. Cisco. com. The less- complex configurations are generally simple to build, even using the. CLI. At the same time, the broad range and component- level adaptability of the. Cisco IOS software platform is available if required to deal with the complexity. Hopefully by reading this chapter, you will at. Cisco IOS, voice over IP (Vo. IP), and Cisco CME documentation. IP phones may appear to be very similar in appearance to the digital phones. TDM- based PBX, at least on initial inspection. IP phones do behave. When you lift the handset, you. When an incoming call arrives, the phone rings. Phone users. expect this behavior, which makes the introduction of IP phone technology as a. TDM- based telephony relatively painless for the vast. In the case of traditional TDM- based. TDM PBX. This in turn has its roots in the. PBX systems that preceded it. With IP telephony, some conscious and deliberate effort has gone into. TDM PBX world are no. This is well illustrated by considering the idea of. IP phones. In an. PBX or Key System, the number of twisted- pair cables connected to the. If you want more phone. This is still mostly true for digital TDM. An example is a Basic Rate Inerface (BRI) phone with a twisted- pair. B + D—that is, two bearer channels (audio) plus one data. For an IP phone, there is no direct relationship between the physical wiring. IP phone supports. IP phones based on 1. Mbps. Ethernet connections can theoretically support hundreds of phone lines. How many. lines an IP phone supports is instead determined solely by the design of the. The user interface might be a traditional looking one that has a. Alternatively, the IP phone might simply have a touch screen. In this case, the. Other variations on user interface. The extreme example of this is the PC softphone. A softphone is simply an. PC where you select a phone line from the PC. The next section describes how Cisco CME deals with phones and phone. Cisco CME Ephone and Ephone- dn. In the Cisco CME product, an IP phone device is called an ephone (short for. Ethernet phone). The phone lines that are associated with the ephone are called. Ethernet phone directory number [DN]). An ephone- dn is made up of the. Virtual voice port. Dial peer. The virtual voice port is the nearest direct equivalent to a physical phone. Cisco CME system. The virtual voice port is the object that maintains. The dial peer is the object that. A dial peer. can do many additional things besides control the virtual voice port's. A. virtual voice port can be associated with multiple dial peers and, therefore. Figure 5- 1 shows that ephone- dn 7 creates, or is associated with, virtual. POTS) dial peer that. The dial peer contains the voice. It is used for call- routing purposes for incoming. The virtual voice port contains the station ID that sets the caller ID. Figure 5- 1 Ephone- dn. Components: Voice Port and Dial Peer. The terms dial peer and voice port are inherited from the Cisco IOS router. Vo. IP gateways in toll- bypass networks (using protocols such as H. Session Initiation Protocol [SIP], and Media Gateway Control Protocol [MGCP]). In the router voice gateway context, a voice port typically refers to an. Public Switched Telephone Network (PSTN) (or. PBX), but it also includes interfaces that directly connect to analog. The behavior and usage of a virtual voice port is similar in many. Foreign Exchange Station [FXS]). As a result of this. FXS voice ports. In this. FXS means ephone- dn virtual FXS voice port. You can configure a virtual voice port to have one or two subchannels. Each. subchannel can accept a single voice call. This arrangement is similar to the. ISDN BRI voice port. An ephone- dn that is. The primary use of the dual- line option is to provide a. The dual- line. option also provides a way to support the second call instance required by. When you select the dual- line option, the Cisco IP phone provides a rocker. IP phone display. For example, in the case. You can press the hold softkey to place the active call. IP phone display, and then select. Alternatively, call waiting can be supported simply by using an IP phone that. In this case, you configure each button. Instead of configuring a single. Cisco IOS Voice Dial Peer Hunting"). This provides a simpler. You perform navigation between. The previously active call is automatically placed on hold. This. mode of operation is often called one button, one call. The most basic elements of the Cisco CME configuration are the ephone and. You bind the ephone- dn elements you have created to the configured. Example 5- 1 shows a very simple example. Example 5- 1 Simple Ephone- dn Configurationrouter#show running- config. Example 5- 1 shows a single IP phone (ephone 7) that is uniquely identified by. Ethernet MAC address (0. You can find the Ethernet MAC address. Cisco IP phone or from the phone's. In many cases, the MAC address can be autodiscovered. Cisco CME router's LAN network. Example 5- 1 also shows a dual- line ephone directory number (ephone- dn 4). This. ephone- dn has telephone extension number 1. Ephone- dn 4 is then associated or. Example 5- 2 shows a slightly expanded view of the CLI configuration in. Example 5- 1. Example 5- 2Å@Expanded Ephone- dn Configurationrouter#show running- config. P0. 03. 03. 02. 02. Fast. Ethernet. 0/1. P0. 03. 03. 02. 02. The configuration shown in Example 5- 2 is all that's needed to register. IP phone provisioned with a single line button and to produce dial. The only assumptions made here are that the. Cisco 7. 96. 0 IP Phone, that the phone firmware desired is the file. P0. 03. 03. 02. 02. Flash memory. The tftp- server, ip dhcp pool, and. Fast. Ethernet 0/1 commands shown are standard Cisco. IOS CLI router commands that are outside the scope of this book, but you are. IP world. These commands. Cisco CME- specific commands. Cisco CME also has a telephony- service setup command that. This command. includes automatic creation of the Dynamic Host Configuration Protocol (DHCP). CLI entry if you need it. Using a PBX Versus a Key System. The Cisco CME product addresses phone systems in the roughly 1- to- 2. This product spans the range from a small, independent, four- person. Cisco 2. 80. 1 router) to a. Cisco 3. 84. 5 router). This marketplace has traditionally been. Key Systems (with perhaps two PSTN trunk lines. PBX systems (with multiple T1 Primary. Rate Interface [PRI] digital PSTN interface trunks). Configuring Call. Manager Express (CME) To Support Cisco Jabber IP Phone for Android & i. Phone. Cisco is continuously developing its Call. Manager Express product, introducing new features and services to help keep up with its customers' and the market’s demands. With the rapid increase of the mobile phone market, customer requests for Call. Manager Express to support them are on the rise. In response, Cisco added support for Apple’s popular i. Phone with Call. Manager Express v. IOS 1. 5. 1(4)M ), but unfortunately did not include Android support, leaving millions of Android phone users in the dark. At the time Cisco Mobile 8. Phone users, allowing them to connect and make phone calls via CME just as any normal softphone client. Cisco Mobile was later renamed Cisco Jabber. Thankfully, with Call. Manager Express v. IOS 1. 5. 2(4)M1 ), Cisco finally added support of the Jabber application for the Android operating system. Both Cisco Jabber versions (Android and i. Phone) use SIP as the communication protocol with CME. SCCP is not used. While CME 9. Phone and Android phones, getting them to work is a different story. This article will demonstrate how to configure your Call. Manager Express v. Cisco Jabber for both i. Phone and Android operating systems. At the time of writing, the latest version of Cisco Jabber for i. Phone is 9. 0 (1) and 9. Android operating system. Cisco ISR 2. 80. 0 Series CME – No Support for Jabber Android Users. On the 1st of November 2. Cisco announced its discontinuation of all 2. ISR routers and, as a result, will only provide minor software upgrades. The latest IOS version available for the 2. CME- IOS Matrix, supports Call. Manager Express v. Since support for the Android operating system begins officially with v. CME routers will only be able to support Cisco Jabber for i. Phone. Unfortunately no support for Android is available (yet) for this platform, and we don’t expect to see any in the near future. IT Managers and engineers who want to provide CME services to their Android Jabber users must upgrade to the 2. Cisco Jabber for Android – How to Overcome Bugs! Jabber support for the Android operating system is very new on CME and as such, the Jabber version available in Google’s Play Store might not work properly. When we tested Cisco’s Jabber from the Google Play Store using our Samsung Galaxy SII (Model GT- I9. Ice- Cream Sandwich 4. CME v. 9. 1. We tried the LAN Wi- Fi and even the GSM network (via Anyconnect VPN) but the application failed continuously to register and requested we check our Internet Calling settings. After consulting with Cisco engineers around the globe, we discovered we had hit a bug on the Android version of Jabber, specific to some Samsung phones running Android 4. This was later confirmed with some HTC Android phones as well. However, we managed to obtained an Engineering Special (ES) edition (as Cisco calls it) of Jabber, that overcomes the problems mentioned and works like a charm! This ES Jabber release is not available through Google’s Play Store, nor from Cisco as a direct download. Fortunately, Firewall. Android users can download the engineering special edition from our Cisco Tools and Applications section! Configuring Call. Manager Express to Support Jabber for Android and i. Phone. The configuration settings of CME are pretty much identical for both Android and i. Phone operating systems. Since Jabber for CME uses SIP as a communication protocol, it is mandatory to enable SIP registration on CME. Enabling SIP registration requires special attention to ensure registration is only restricted to the local network or VPN users at most. Opening SIP registration to public IP’s or untrusted networks is definitely not recommended as it could allow anyone to connect and register to the Call. Manager Express. First step is to configure CME to allow calls from SIP to SIP endpoints and enable SIP registrar: voice service voip ip address trusted list ipv. Gigabit. Ethernet. Gigabit. Ethernet. The ip address trusted list section is used to list remote client IP addresses which are not part of the local network. This will allow them to register with CME and place or receive calls. If for example your Android or i. Phone connects to the corporate LAN via VPN (Any. Connect VPN) and obtains an IP address on a different network/subnet from CME, it will be necessary to list the VPN IP address or VPN network pool for the phone to register. The control source- interface Gigabit. Ethernet. 0/1 command ensures SIP uses Gigabit. Ethernet 0/1 as the binding interface for all SIP communications. The interface’s IP address will show up as the source IP for all outgoing communications. All incoming communications are expected to terminate to this interface as well. Next step is to configure the voice register global section. This section holds key configuration elements for the correct operation of our CME SIP service. Here we will specify various parameters including: Set SIP registrar to CME mode, source- address for phone registration, maximum extensions (max- dn), maximum phones (max- pool), set authentication for phone registration and finally create configuration files for all phones (tftp- path, file text & create profile). Now we can configure our phone extension using the voice register dn command and SIP phone with the voice register pool command: voice register dn 5 number 7. Chris- Android 7. Chris- Android 7. D. C5. AF. 7. 9B2 session- transport tcp type Jabber- Android number 1 dn 5 username chris password firewallcx codec g. While most commands are self- explanatory, we’ll focus on the most important: number 7. This specifies the extension our SIP phone will have. D. C5. AF. 7. 9B2. This is the Wi- Fi MAC address of our mobile phone. In our example, our Samsung Galaxy SII. Jabber- Android. Here we specify the sip client type. It can either be Cisco. Mobile- i. OS for Apple i. Phone users or Jabber- Android for Android users. This specifies the codec that will be used for this client. It is possible to use g. Each code has different bandwidth requirements and sound quality. G7. Don’t forget to add the IP overhead to these figures. Note: When the SIP phone extensions and devices configurations are complete or altered, it is imperative we go to the voice register global section and issue the create profile command. This ensures the appropriate configuration files on CME are created for our SIP devices. Cisco Jabber for Android (both 4. Settings – Configuration Example. Connect to the Google Play Store and search for Cisco Jabber: After downloading and installing Cisco Jabber for Android, launch the application and click on Begin Setup: Next, in the Device ID field, enter the SEP+MAC address (Applications - > Settings- > Wi- Fi- > Advanced Wi- Fi) without any spaces or dots. Now, enter your CME IP address in the Server Address field. You can selectively enable Use mobile data network and Use noncorporate Wi- Fi options. We always select Use noncorporate Wi- Fi only to ensure the GSM mobile network is not used (especially if your provider charges GSM data). If necessary, enable Auto Start so that Cisco Jabber starts every time your phone restarts. Now click Verify to register with Call. Manager Express: After Cisco Jabber successfully registers with CME, we are presented with the main screen and dial pad: Cisco Jabber for i. Phone Settings – Configuration Example. First we need to verify our phone is connected to the corporate Wi- Fi network and is accessible from CME. Launch Cisco Jabber and complete the setup wizard. Enter the Device Name SEP, followed by your MAC address without any dots. SEP1. 47. DC5. AF7. B2. Enter your CME IP address in the TFTP Server field. E. g 1. 92. 1. 68. Turn ONSIP Digest Authentication and enter the username and password configured under the voice register pool section. Following is a screenshot of the complete settings on our i. Phone: This concludes our Cisco Call. Manager Express (CME) Cisco Jabber for Android and i. Phoneconfiguration. Back to Cisco Vo. IP/CCME - Call. Manager - Unity Express Section.
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