Cisco Cisco TelePresence Video Communication Server Expressway
Sending and returning calls via ISDN gateways
Cisco VCS Deployment Guide: FindMe™ (Cisco VCS X6)
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Sending and returning calls via ISDN gateways
When FindMe routes a call to an ISDN gateway (e.g. to access a mobile phone, or some other ISDN
accessible destination) and Caller ID (Applications > FindMe > Configuration) is configured to use
the FindMe ID, the caller ID presented will be the user’s E.164 Phone number (either entered
manually when the user account was configured, or supplied by AD (from the Office Phone number) if
Cisco TMS created the account for AD provisioned users).
accessible destination) and Caller ID (Applications > FindMe > Configuration) is configured to use
the FindMe ID, the caller ID presented will be the user’s E.164 Phone number (either entered
manually when the user account was configured, or supplied by AD (from the Office Phone number) if
Cisco TMS created the account for AD provisioned users).
The called party will have the E.164 phone number presented. If they return the call (and the E.164
number is routed by the network to an ISDN gateway on the video network), the call will be received
by the ISDN gateway and forwarded to Cisco VCS with the E.164 Phone number as the called
number.
number is routed by the network to an ISDN gateway on the video network), the call will be received
by the ISDN gateway and forwarded to Cisco VCS with the E.164 Phone number as the called
number.
Cisco VCS therefore needs to be configured to route this call to the relevant FindMe ID in order to call
the user’s endpoints. This can be carried out either by using another FindMe entry, or by setting up
ENUM.
the user’s endpoints. This can be carried out either by using another FindMe entry, or by setting up
ENUM.
Using FindMe to convert E.164 numbers to FindMe IDs
Additional accounts can be used to direct E.164 dialed numbers to URIs.
For each user with both a URI-style or H.323 ID FindMe ID and an associated E.164 phone number,
set up a second user account with:
set up a second user account with:
the Username, for example 123456-name.surname
the FindMe ID set to the user’s E.164 phone number
the Principal device address set to the FindMe ID of their main account
This is a static mapping, so the user will not ever need to log in to this second (E.164) account. Any
changes to devices associated with that user are always made in their main account.
changes to devices associated with that user are always made in their main account.
Note: If remote account authentication is enabled and if accounts are not created on the remote
database for these telephone number users, administration of these accounts will only be achievable
by a Cisco VCS administrator.
database for these telephone number users, administration of these accounts will only be achievable
by a Cisco VCS administrator.
Using ENUM to convert E.164 numbers to FindMe IDs
Using ENUM allows incoming E.164 numbers to be looked up in an ENUM server and the call
forwarded to the URI associated with that number.
forwarded to the URI associated with that number.
For each account set up the phone number as the ENUM address in the DNS server and map it to the
FindMe ID for that account.
FindMe ID for that account.
Configuration and implementation details for ENUM are available in the document “Cisco VCS
Deployment Guide – ENUM dialing on Cisco VCS”.
Deployment Guide – ENUM dialing on Cisco VCS”.
H.323 gateway prefix
Returning calls to PSTN / ISDN callers who have dialed through an ISDN gateway is made easier by
configuring the Gateway Caller ID (VCS configuration > Protocols > H.323) to Include prefix.
configuring the Gateway Caller ID (VCS configuration > Protocols > H.323) to Include prefix.
The Gateway Caller ID options are:
Include prefix: the caller ID displayed on the receiving phone is the caller’s phone number prefixed
by the gateway prefix. This means the recipient can directly return the call by selecting the
number and pressing return call (provided that an appropriate search rule is in place to allow calls
with this prefix to be routed to the ISDN gateway).
by the gateway prefix. This means the recipient can directly return the call by selecting the
number and pressing return call (provided that an appropriate search rule is in place to allow calls
with this prefix to be routed to the ISDN gateway).