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New Member

SIP to ISDN suspend/resume

Hello, there are any way to send an ISDN suspend and resume from a SIP phone.

The scenario is like this:

[SIP phone]---[SIP PBX]---[Cisco1721]--E1/PRI (PSTN)-- CO -- Phone.

Regards.

2 REPLIES
Cisco Employee

Re: SIP to ISDN suspend/resume

Suspend and Resume functionality is enabled by default. However, the functionality is also configurable. To configure Suspend and Resume for all dial peers on the VoIP network, perform the steps below on both originating and terminating gateways.

Router> Enable -- Enables privileged EXEC mode. Enter your password if prompted.

Router# configure terminal -- Enters global configuration mode.

Router(config)# sip-ua -- Enters SIP user-agent configuration mode.

Router(config-sip-ua)# suspend-resume -- Enables support for Suspend and Resume.

Router(config-sip-ua)# exit -- Exits the current mode.

New Member

Re: SIP to ISDN suspend/resume

That is for the direction:

ISDN -> VoIP/SIP gateway -> SIP phone;

And what I'm looking for is the opposite direction:

SIP phone -> VoIP Gateway -> ISDN.

i.e are there any SIP command I can send to Cisco gateway, to generate a ISDN suspend and resume? Thk.

Regards.

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