Shulou(Shulou.com)06/01 Report--

In this part, the experiment can not be done because there is no physical voice experimental equipment. This article mainly focuses on the collation of concepts.

Basic concept of pronunciation

classification

Interface

Trunk line

Simulation

Figures

Simulation

Figures

Traditional speech

FXS, FXO, Evil M.

E1, T1

PSTN

E1 (2.048M)

T1 (1.544m)

IP voice

The voice connection is established on the channel of IP. The signaling generally includes: H323, SIP, SCCP, MGCP.

two。 General connection mode

Traditional voice:

Tel-FXS-CME-(PSTN, TI, E1)-CME-FXS-Tel

/ / there may be a bit of a misunderstanding here. In the IT environment of older enterprises, PBX is basically used here, and then the analog phone is connected to the desktop through a rack, and several numbers applied for by ISP are used as relay lines to contact the outside world.

Because we are talking about the related technologies of cisco, we use the voice equipment of cisco instead of PBX / /.

The connection combinations on CME are:

Simulation: one communication takes up one channel

FXS-FXO, FXO-FXS

EBay M-eBay M: commonly used to connect CME to PBX (devices with callrouting capabilities)

Digital: can support multi-channel concurrent communication

T1-T1: 24 concurrent communications, 64K per channel

E1-E1: 30 concurrent communications, 64K per channel

IP Voice: based on message switching Technology

Common connection schemes:

Phone--- (PBX)-router-internet-router- (PBX)-phone

The advantages of this solution are:

1. Reduce expenses

two。 Reduce the maintenance amount of IT, centralize all the equipment in router for unified maintenance

3. More IP-based applications

3. CISCO voice hardware selection

For the choice of hardware, you can refer to the following connection

Http://www.cisco.com/c/en/us/products/unified-communications/index.html

PVDM: packet voice dsp module, packet voice DSP module.

DSP: digital signal processor

In the process of performing codec, the device generally adopts flexible (resilient) mode, and the number of sessions processed by each DSP:

PVDM I: 4 sessions / 1 DSP

PVDM II: 16 sessions / 1 DSP

PVDM III: 32 sessions / 1 DSP

4. Check whether the device has the ability of voice command

1Sh diag: whether the hardware has a voice module, such as FXS,FXO,E1,T1

2 Sh voice dsp detail: whether there are DSP resources

3 Sh ver: whether the IOS version supports voice features, generally ipvoice / enterprise.

Screenshot: I wanted to take a screenshot, but I can't just post it here. Post some text:

Sh diag:

PVDM Slot 0:

32-channel (G.711) Voice/Fax PVDM3 DSP DIMM PVDM daughter card

WIC Slot 2:

VIC2-BRI-NT/TE Voice daughter card (2 port)

WIC Slot 3:

VIC2-BRI-NT/TE Voice daughter card (2 port)

You can also use sh inventory

NAME: "CISCO2921/K9 chassis", DESCR: "CISCO2921/K9 chassis"

PID: CISCO2921/K9, VID: V06,

NAME: "2nd generation two port BRI voice interface daughtercard on Slot 0 SubSlot 2", DESCR: "2nd generation two port BRI voice interface daughtercard"

PID: VIC2-2BRIRTHUTAME te =, VID: v

NAME: "2nd generation two port BRI voice interface daughtercard on Slot 0 SubSlot 3", DESCR: "2nd generation two port BRI voice interface daughtercard"

PID: VIC2-2BRIRTHUTAME te =, VID: v

NAME: "PVDM3 DSP DIMM with 32 Channels on Slot 0 SubSlot 4", DESCR: "PVDM3 DSP DIMM with 32 Channels"

PID: PVDM3-32, VID: V01

NAME: "C2921/C2951 AC Power Supply", DESCR: "C2921/C2951 AC Power Supply"

PID: PWR-2921-51-AC, VID: V03

Sh voice dsp detailed: there are too many, so post less:

Sh voice dsp detailed

DSP DSP DSPWARE CURR BOOT PAK TX/RX

TYPE NUM CH CODEC VERSION STATE STATE RST AI VOICEPORT TS ABORT PACK COUNT

=

Edsp 0001 01 g729r8 p 0.1 IDLE 50/0/1.1

Edsp 0002 02 g729r8 p 0.1 IDLE 50/0/1.2

Edsp 0003 01 g711ulaw 0.1 IDLE 50/0/2.1

Edsp 0004 02 g711ulaw 0.1 IDLE 50/0/2.2

Edsp 0005 01 g729r8 p 0.1 IDLE 50/0/3.1

Edsp 0006 02 g729r8 p 0.1 IDLE 50/0/3.2

Edsp 0007 01 g711ulaw 0.1 IDLE 50/0/4.1

Edsp 0008 02 g711ulaw 0.1 IDLE 50/0/4.2

Edsp 0009 01 g711ulaw 0.1 IDLE 50/0/5.1

Edsp 0010 02 g711ulaw 0.1 IDLE 50/0/5.2

Edsp 0011 01 g711ulaw 0.1 IDLE 50/0/7.1

Edsp 0012 02 g711ulaw 0.1 IDLE 50/0/7.2

Edsp 0013 01 g711ulaw 0.1 IDLE 50/0/8.1

Edsp 0014 02 g729r8 p 0.1 IDLE 50/0/8.2

Edsp 0015 01 g711ulaw 0.1 IDLE 50/0/9.1

Edsp 0016 02 g729r8 p 0.1 IDLE 50/0/9.2

Edsp 0017 01 g711ulaw 0.1 IDLE 50/0/10.1

.

.

.

-- FLEX VOICE CARD 0-

* DSP VOICE CHANNELS*

CURR STATE: (busy) inuse (b-out) busyout (bpend) busyout pending

LEGEND: (bad) bad (shut) shutdown (dpend) download pending

DSP DSP DSPWARE CURR BOOT PAK TX/RX

TYPE NUM CH CODEC VERSION STATE STATE RST AI VOICEPORT TS ABRT PACK COUNT

=

SP2600 001 01 g711ulaw 28.3.5 busy idle 00 0/2/1 04 0 1979/2536

SP2600 001 02 None 28.3.5 idle idle 00 00 / 0

SP2600 001 03 None 28.3.5 idle idle 00 00 / 0

SP2600 001 04 None 28.3.5 idle idle 00 00 / 0

SP2600 001 05 None 28.3.5 idle idle 00 00 / 0

SP2600 001 06 None 28.3.5 idle idle 00 00 / 0

SP2600 001 07 None 28.3.5 idle idle 00 00 / 0

SP2600 001 08 None 28.3.5 idle idle 00 00 / 0

SP2600 001 09 None 28.3.5 idle idle 00 00 / 0

SP2600 001 10 None 28.3.5 idle idle 00 00 / 0

SP2600 001 11 None 28.3.5 idle idle 00 00 / 0

SP2600 001 12 None 28.3.5 idle idle 00 00 / 0

SP2600 001 13 None 28.3.5 idle idle 00 00 / 0

SP2600 001 14 None 28.3.5 idle idle 00 00 / 0

SP2600 001 15 None 28.3.5 idle idle 00 00 / 0

SP2600 001 16 None 28.3.5 idle idle 00 00 / 0

SP2600 001 17 None 28.3.5 idle idle 00 00 / 0

SP2600 001 18 None 28.3.5 idle idle 00 00 / 0

SP2600 001 19 None 28.3.5 idle idle 00 00 / 0

SP2600 001 20 None 28.3.5 idle idle 00 00 / 0

SP2600 001 21 None 28.3.5 idle idle 00 00 / 0

SP2600 001 22 None 28.3.5 idle idle 00 00 / 0

SP2600 001 23 None 28.3.5 idle idle 00 00 / 0

SP2600 001 24 None 28.3.5 idle idle 00 00 / 0

SP2600 001 25 None 28.3.5 idle idle 00 00 / 0

SP2600 001 26 None 28.3.5 idle idle 00 00 / 0

SP2600 001 27 None 28.3.5 idle idle 00 00 / 0

SP2600 001 28 None 28.3.5 idle idle 00 00 / 0

SP2600 001 29 None 28.3.5 idle idle 00 00 / 0

SP2600 001 30 None 28.3.5 idle idle 00 00 / 0

SP2600 001 31 None 28.3.5 idle idle 00 00 / 0

SP2600 001 32 None 28.3.5 idle idle 00 00 / 0

* 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

=

-END OF FLEX VOICE CARD 0

Sh ver

.

.

License Info:

License UDI:

Device# PID SN

* 0 CISCO2921/K9

Technology Package License Information for Module:'c2900'

-

Technology Technology-package Technology-package

Current Type Next reboot

-

Ipbase ipbasek9 Permanent ipbasek9

Security None None None

Uc uck9 Permanent uck9

Data None None None

Configuration register is 0x2102

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