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No dial tone on FXS ports

harry76_us
Level 1
Level 1

I am having trouble configuring FXS/FXO ports on a Cisco 3600 router used as a gateway with CCM 3.1.

I followed guidelines from cisco website,which is

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186a008017825e.shtml

I used mgcp, and I get no dial tone on FXS ports.Also, i am unable to call to PSTN from my IP phones.

Can anyone please help me out with this????????

2 Replies 2

sskillin
Level 1
Level 1

Can you throw your config up here? That would help a bunch, as this is a really generic item with many possible places to go wrong. Also, I can only speak for myself, but I haven't done work on a 3.1 system in literally years. Any plans to upgrade?

Hi,

I appreciate your prompt reply.I am on a testing stage right now.But would be a upgrading to CCM 4.0 soon.

Configuration on Cisco 3640 gateway using MGCP with 2fxs & 2fxo ports:

Router(config)#host R3640A

R3640A(config)#int e0/0

R3640A(config-if)#ip address 10.4.2.254 255.255.255.0

R3640A(config-if)#no shut

R3640A(config-if)#exit

R3640A(config)#mgcp

R3640A(config)#mgcp call-agent 10.4.2.10

/* 10.4.2.10 /24 is an ip address of CCM 3.1 */

R3640A(config)#mgcp dtmf-relay voip codec all mode out-of-band

R3640A(config)#ccm-manager mgcp

R3640A(config)#dial-peer voice 1 pots

R3640A(config)#application MGCPAPP

R3640A(config)#port 3/0/0 /*FXS ports*/

R3640A(config)#dial-peer voice 2 pots

R3640A(config)#application MGCPAPP

R3640A(config)#port 3/0/1 /*FXS ports*/

R3640A(config)#dial-peer voice 3 pots

R3640A(config)#application MGCPAPP

R3640A(config)#port 3/1/0 /*FXO ports*/

R3640A(config)#dial-peer voice 4 pots

R3640A(config)#application MGCPAPP

R3640A(config)#port 3/1/1 /*FXO ports*/

R3640A(config)#voice-port 3/0/0

R3640A(config)#no shut

Both ports are in service /*FXS ports*/

R3640A(config)#voice-port 3/1/0

R3640A(config)#no shut

Both ports are in service /*FXO ports*/

Configuration on CCM3.1 for FXS/FXO ports using MGCP:

Device>Add a New Device>Gateway

Under Add a new gateway:

1.Gateway Type: cisco 3640(in my case)

2.Device Protocol:"not required for mgcp"

Under MGCP configuration:

1.MGCP Domain Name: R3640A

2.Description: 3640 gateway

3.Cisco CallManager Group: default

4.Installed VICs

a. module in slot 0-none

b. module in slot 1-none

c. module in slot 2-none

d. module in slot 3-(NM-2V)

5.Product specification configuration

a. Global ISDN switch type -4ESS

b. Switchback Timing-graceful

c. switchback uptime-delay(min)-10

d. switchback schedule(hh:mm)-12:00

Configured FXS ports:

1.Module in slot3-NM-2V

a. sub-unit 0 -VIC-2FXS 3/0/0 3/0/1

b. sub-unit 1 -VIC-2FXO 3/1/0 3/1/1

2 Then i hit "3/0/0"

a. Gateway Information

- Description: AALN/S3/SU1/0@R3640A

- Device pool: default

- Calling search space: none

- Media resource group list: none

- Network hold audio source: none

- User hold audio source:none

- Location:none

b.Port Information

- Prefix DN:

- Num Digits:0

- Expected Digits :0

3.Directory number configuration in fxs

a.Directory Number

- directory number:2001 in one fxs and 2002 in

another fxs (3/0/1)

- partition:none

b.Directory Number Settings

- voice mail box: varies if DN is 2001, then it

is 2001,and so on.

- calling search space:none

- user hold audio source:none

- network hold audio source:none

- call waiting:defaut

- auto answer:not available

c. Call Forward And Pickup Settings

voice mail destination calling search space

1.Forward all none

2.forward busy none

3.Forw.no ans. none

call pick up group-none

Configure FXO Ports:

-Hit 3/1/1 as mentioend above

a.MGCP Member Configuration

Port type:loop start

b.Mgcp member information

- description:R3640A 3/1/0 FXO

- device pool:default

- calling search space:none

- location:none

c. Port information

- port direction:bothways

- Attendant DN:3000 &3001(on other fxo port)

Configured a route pattern

1.route plan>route pattern

a.Route Pattern Configuration

I.Pattern definition

-route pattern:9.@

-partition:none

-numbering plan:north america num. plan

-route filter:none

-gatway/route list: AALN/S3/SU0/0@R3640A

-route option: route this pattern

- provide outside dial tone:yes

II.Calling Party Tranformations

-use calling party's external phone number mask

(unchecked)

-calling party transform mask :blank

III.Called Party Transformations

-discards digits:predot

-called party transform mask: blank

-prefix digits(outgoing calls): blank