Curso de Telefonía IP para el MTC. Sesión 4-1 Tipos de llamadas. Mg. Antonio Ocampo Zúñiga

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1 Curso de Telefonía IP para el MTC Sesión 4-1 Tipos de llamadas Mg. Antonio Ocampo Zúñiga

2 Call Types Local: Does not traverse the WAN or PSTN. On-net: Occurs between two telephones on the same data network. Off-net: Occurs when a user dials an access code (such as 9 ) to gain access to the public switched telephone network (PSTN). PLAR: Automatically connects one telephone to a second telephone.

3 Call Types PBX-to-PBX: Originates at one PBX and terminates at another. Intercluster trunk calls: Occurs when calls are routed by two separate Cisco Unified Communications Managers. On-net-to-off-net: Occurs when calls originate on an internal network and are routed to an external network (usually the PSTN).

4 Local Calls PBX Dial Ring! IP WAN Gateway Gateway

5 On-Net Calls PBX Ring! Dial Gateway Lima IP WAN Toll Bypass PSTN Gateway Arequipa

6 Off-Net Calls Dial Access Code 9 Ring! PSTN Gateway

7 PLAR Calls PBX Ring! Voice Port Configured to Dial: IP WAN Gateway Gateway

8 PBX-to-PBX Calls PBX A User Dials PBX B Ring!! IP WAN Gateway Toll Bypass Gateway PSTN

9 Intercluster Trunk Call Cisco Unified Communications Manager Site A Cisco Unified Communications Manager Site B IP IP WAN

10 On-Net-to-Off-Net Call WAN is down or congested. IP WAN 4. Gateway 3. Toll Bypass Gateway PSTN

11 Summary There are seven typical call types in a VoIP network. A local call is handled entirely by the router and does not travel over an external network. On-net calls can be routed through one or more voice-enabled routers, but the calls remain on the same network.

12 Summary (Cont.) An off-net call occurs when a user dials an access code (such as 9) from a telephone that is directly connected to a voice-enabled router or PBX to gain access to the PSTN. PLAR calls automatically connect one telephone to a second telephone when the first telephone goes off hook. A PBX-to-PBX call originates at one PBX and terminates at another PBX while using the network for voice transport.

13 Summary (Cont.) Intercluster trunk calls are routed between Cisco Unified Communications Manager clusters using a trunk. On-net to off-net calls originate on an internal network and are routed to an external network.

14 Curso de Telefonía IP para el MTC Sesión 4-2 Puertos de voz analógicos Mg. Antonio Ocampo Zúñiga

15 Voice Ports Telephone to WAN Voice Port Voice Port Telephone to PSTN FXS (Analog) Voice Port Voice Port T1 or E1 or ISDN (Digital) IP WAN or PSTN FXS (Analog) FXO (Analog) PSTN PBX to PBX over WAN Voice Port Voice Port Voice Port Voice Port E&M (Analog) T1, E1, or ISDN (Digital) IP WAN or PSTN T1, E1, or ISDN (Digital) T1, E1, or ISDN QSIG (Digital)

16 Signaling Interfaces Telephone to WAN Voice Port Voice Port FXS T1 or E1 or ISDN WAN or PSTN Telephone to PSTN Voice Port Voice Port FXS FXO PSTN PBX to PBX over WAN Voice Port Serial or T1 Serial or T1 Voice Port PBX E&M T1, E1, or ISDN WAN T1, E1, or ISDN T1, E1, or ISDN QSIG (Digital) PBX

17 Analog Voice Ports FXS FXS: Connects directly to end-user equipment such as telephones, fax machines, or modems FXO FXO PSTN FXO: Used for trunk, or tie line, connections to a PSTN CO or to a PBX that does not support E&M signaling E&M WAN or PSTN E&M: Most common form of analog trunk circuit E&M

18 Analog Signaling Supervisory signaling Loop-start Ground-start Address signaling Pulse DTMF Informational signaling Call progress tones

19 Loop-Start Signaling Idle state. 1 Telephone Tip CO RG RG Tip Telephone On-Hook Ring 48 V Ring On-Hook Caller picks up handset and dials number. Telephone 2 Off-Hook Tip Dial Tone Ring CO RG RG 48 V Tip Ring Voltage Ring Telephone On-Hook Call is connected. 3 Telephone Tip CO RG RG Tip Telephone RG = Ring Generator Off-Hook Ring 48 V Ring Off-Hook

20 Ground-Start Signaling Idle state. 1 CO Tip PBX or FXO Tip Ground Detector RG 48 V Ring On-Hook PBX grounds ring lead; CO senses ring ground and grounds tip lead. 2 RG CO 48 V Tip Ring PBX or FXO Tip Ground Detector On-Hook PBX senses tip ground, closes twowire loop, and removes ring ground. 3 RG CO 48 V Tip Ring PBX or FXO Tip Ground Detector Off-Hook RG = Ring Generator

21 DTMF Frequencies Frequencies * 0 #

22 Network Call Progress Tones Tone Frequency (Hz) On Off Dial Continuous Busy Ringback, normal Ringback, PBX Congestion (Toll) Reorder (Local) Receiver off-hook No such number Continuous, FM = frequency modulation 1 HZ

23 E&M Signaling Type I Type V Battery M-Lead Detect M-Lead Detect Battery Battery Detect E-Lead Battery Detect E-Lead T T Audio R T1 Audio Not used on twowire Audio R T1 Audio Not used on twowire Audio R1 Audio Full duplex on twowire Audio R1 Audio Full duplex on twowire E = E-Lead M = M-Lead T = Tip R = Ring T1 = Tip 1 R1 = Ring 1

24 Immediate-Start Signaling Sending Switch Receiving Switch Off-Hook On-Hook Sending switch goes off-hook. 150 ms DTMF Digits Sending switch waits a minimum of 150 ms before sending addressing. Off-Hook Receiving switch goes off-hook after connection is established. On-Hook

25 Wink-Start Signaling Sending Switch Receiving Switch Off-Hook On-Hook Sending switch goes off-hook. Receiving switch momentarily goes off-hook for 140 to 200 ms. Wink Off-Hook On-Hook DTMF Digits Sending switch waits a minimum of 210 ms before sending addressing. Off-Hook Receiving switch goes off-hook after connection is established. On-Hook

26 Delay-Start Signaling Sending Switch Receiving Switch Off-Hook On-Hook Sending switch goes off-hook. Receiving switch goes on-hook. Off-Hook On-Hook DTMF Digits Sending switch waits for receiving switch to go on-hook before sending addressing. Off-Hook Receiving switch goes off-hook after connection is established. On-Hook

27 Analog Voice Ports FXS FXO E&M

28 FXS Voice Port Configuration Example Lima Voice Port 0/2/0 WAN Router(config)# voice-port 0/2/0 Router(config-voiceport)# signal groundstart Router(config-voiceport)# cptone GB Router(config-voiceport)# ring cadence pattern01 Router(config-voiceport)# no shutdown

29 Trunks Lima T1 PRI E&M Trunk PSTN Trujillo T1 QSIG Trunk Arequipa T1 QSIG Trunk T1 CAS Trunk Piura E1 R2 Trunk Cusco E1 CCS Trunk T1 PRI CAS = Channel Associated Signaling CSS = Common Channel Signaling

30 Analog Trunks FXS Port FXS Port FXS Port FXO Port FXO Port Station Port PSTN CO FXS Interface FXO Interface Trunk Side of PBX DID Port PSTN E&M Port CO E&M Interface DID Interface

31 Analog Trunks (Cont.) Inbound and Outbound Caller ID with FXO and FXS Caller ID Display Number Name ACME Enterprises Extension 0113 Caller ID Display Number Name John Smith PSTN Call 1 Call 2 Service Provider Database Number Name ACME Enterprises Analog Extension Station ID Number Station ID Name John Smith

32 Configuring an Analog FXO PSTN Trunk Lima FXO PSTN Inbound calls should be routed to Router(config)# voice-port 0/0/0 Router(config-voiceport)# signal groundstart Router(config-voiceport)# connection plar opx 4001 Router(config)# dial-peer voice 90 pots Router(config-dialpeer)# destination-pattern 9T Router(config-dialpeer)# port 0/0/0

33 E&M Voice Port Configuration 1001 PBX E&M trunk Wink-start Type I Two-wire Inbound DNIS Outbound DNIS Router(config)# voice-port 1/1/1 Router(config-voiceport)# signal wink-start Router(config-voiceport)# operation 2-wire Router(config-voiceport)# type 1 Router(config-voiceport)# no shutdown Router(config-voiceport)# exit Router(config)# dial-peer voice 10 pots Router(config-dialpeer)# destination-pattern 1... Router(config-dialpeer)# direct-inward-dial Router(config-dialpeer)# forward-digits all Router(config-dialpeer)# port 1/1/1

34 Centralized Automated Message Accounting Analog CAMA Trunk Support Cusco T1 PRI for Standard Calls PSTN CAMA Trunk for Emergency Calls PSAP

35 Configuring CAMA Trunks Cusco Router(config)# voice-port 1/1/1 Router(config-voiceport)# ani mapping Router(config-voiceport)# signal cama KP-NPD-NXX-XXXX-ST Router(config)# dial-peer voice 911 pots Router(config-dialpeer)# destination-pattern 911 Router(config-dialpeer)# prefix 911 Router(config-dialpeer)# port 1/1/1 Router(config)# dial-peer voice 9911 pots Router(config-dialpeer)# destination-pattern 9911 Router(config-dialpeer)# prefix 911 Router(config-dialpeer)# port 1/1/1 Router(config)# dial-peer voice 910 pots Router(config-dialpeer)# destination-pattern 9[2-8]... Router(config-dialpeer)# port 0/0/0:23 T1 PRI for Standard Calls 0/0/0 1/1/1 PSTN CAMA Trunk for Emergency Calls PSAP

36 Configuring DID Trunks Piura DID Support 0/0/0 0/1/0 FXS DID Inbound 0/0/0 PSTN FXO Outbound 0/1/0 Router(config)# voice-port 0/0/0 Router(config-voiceport)# signal did wink-start Router(config)# voice-port 0/1/0 Router(config-voiceport)# signal groundstart Router(config)# dial-peer voice 1 pots Router(config-dialpeer)# incoming called-number. Router(config-dialpeer)# direct-inward-dial Router(config-dialpeer)# port 0/0/0 Router(config)# dial-peer voice 910 pots Router(config-dialpeer)# destination-pattern 9[2-8]... Router(config-dialpeer)# port 0/1/0

37 Timers and Timing Configuration timeouts initial timeouts interdigit timeouts ringing timing digit timing interdigit timing hookflash-in and hookflash-out

38 Timers and Timing Configuration (Cont.) Router(config)# voice-port 0/1/0 Router(config-voiceport)# timeouts initial 15 Router(config-voiceport)# timeouts interdigit 15 Router(config-voiceport)# timeouts ringing 240 Router(config-voiceport)# timing hookflash-in 500

39 Verifying Voice Ports 1. Check for dial tone (FXS only). 2. Check for DTMF tones (FXS only). 3. Use the show voice port command to check the configuration. 4. Use the show voice port command to ensure that the port is enabled. 5. Be sure that the PBX configuration is compatible with the voice port. 6. Check the physical installation of the hardware.

40 show Commands Command show voice port show voice port x/y/z show voice port summary show voice busyout show voice dsp show controller T1 E1 Description Shows all voice port configurations in detail Shows one voice port configuration in detail Shows all voice port configurations in brief Shows all voice ports configured as busyout Shows all DSP statuses Shows the operational state of the controller

41 show voice port router# show voice port Foreign Exchange Station 0/0/0 Slot is 0, Sub-unit is 0, Port is 0 Type of VoicePort is FXS VIC2-2FXS Operation State is DORMANT Administrative State is UP No Interface Down Failure Description is not set Noise Regeneration is enabled Non Linear Processing is enabled Non Linear Mute is disabled Non Linear Threshold is -21 db Music On Hold Threshold is Set to -38 dbm In Gain is Set to 0 db Out Attenuation is Set to 3 db Echo Cancellation is enabled Echo Cancellation NLP mute is disabled Echo Cancellation NLP threshold is -21 db Echo Cancel Coverage is set to 64 ms Echo Cancel worst case ERL is set to 6 db Playout-delay Mode is set to adaptive Playout-delay Nominal is set to 60 ms

42 show voice port summary router# show voice port summary IN OUT PORT CH SIG-TYPE ADMIN OPER STATUS STATUS EC ========= == ============ ===== ==== ======== ======== == 0/0/0 -- fxs-ls up dorm on-hook idle y 0/0/1 -- fxs-ls up dorm on-hook idle y 50/0/11 1 efxs up dorm on-hook idle y 50/0/11 2 efxs up dorm on-hook idle y 50/0/12 1 efxs up dorm on-hook idle y 50/0/12 2 efxs up dorm on-hook idle y

43 show voice dsp router# show voice dsp DSP DSP DSPWARE CURR BOOT PAK TX/RX TYPE NUM CH CODEC VERSION STATE STATE RST AI VOICEPORT TS ABORT PACK COUNT ==== === == ======== ======= ===== ======= === == ========= == ===== ============ edsp g711ulaw 0.1 IDLE 50/0/11.1 edsp g729r8 p 0.1 IDLE 50/0/11.2 edsp g729r8 p 0.1 IDLE 50/0/12.1 edsp g729r8 p 0.1 IDLE 50/0/ FLEX VOICE CARD *DSP VOICE CHANNELS* DSP DSP DSPWARE CURR BOOT PAK TX/RX TYPE NUM CH CODEC VERSION STATE STATE RST AI VOICEPORT TS ABRT PACK COUNT ===== === == ======== ======= ===== ======= === == ========= == ==== ============ *DSP SIGNALING CHANNELS* DSP DSP DSPWARE CURR BOOT PAK TX/RX TYPE NUM CH CODEC VERSION STATE STATE RST AI VOICEPORT TS ABRT PACK COUNT ===== === == ======== ======= ===== ======= === == ========= == ==== ============ C {flex} alloc idle 0 0 0/0/ /0 C {flex} alloc idle 0 0 0/0/ /0

44 test Commands Command test voice port <slot/subunit/port> detector {mlead battery-reversal ring tip-ground ring-ground ring-trip} {on off disable} test voice port <slot/subunit/port> inject-tone {local network} {1000hz 2000hz 200hz 3000hz 300hz 3200hz 3400hz 500hz quiet disable} test voice port <slot/subunit/port> loopback {local network disable} test voice port <slot/subunit/port> relay {elead loop ring-ground battery-reversal power-denial ring tip-ground} {on off disable} test voice port <slot/subunit/port> switch {fax disable} csim start XXXX Description Used to test detector-related functions on a voice port. Use the <slot/port:ds0-group> variable for digital voice ports. Used to inject a test tone into a voice port. Use the <slot/port:ds0-group> variable for digital voice ports. Used to perform loopback testing on a voice port. Use the <slot/port:ds0-group> variable for digital voice ports. Used to test relay-related functions on a voice port. Use the <slot/port:ds0-group> variable for digital voice ports. Used to force a voice port into fax mode. Use the <slot/port:ds0-group> variable for digital voice ports. Used to initiate simulated calls to whichever real-world E.164 number is desired.

45 Summary Voice ports on routers and access servers emulate physical telephony switch connections. Analog voice port interfaces connect routers in packet-based networks to analog twowire or four-wire circuits in telephony networks. FXS, FXO, and E&M ports have several configuration parameters.

46 Summary (Cont.) CAMA is used for 911 and E911 services. DID service enables callers to dial an extension directly on a PBX or packet voice system. You can set a number of timers and timing parameters for fine-tuning the voice port. The show, debug, and test commands are used for monitoring and troubleshooting voice functions in the network.

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